1. Sound Signature Review 6.224 – the Resilient Suppressors Putnik on 16.3-in and 12.6-in AK systems. The Putnik is big, fat, high flow rate, and ready to party. This is a silencer that is purposely designed for AK rifle systems. Does it bring the performance? Spoiler alert – yeah. It does. Introduction to today’s report and Hazard Map Brief 8.1.21. (00:06:37)

2. Listener Questions – Solicitation 8. We’ll dive into your latest questions – this is a repeat segment and we’re almost 600 questions deep. Let’s learn about silencers, together! (00:33:48)

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1. Sound Signature Review 6.223 – the Otter Creek Labs Universe-36 on the 10.3-in 5.56 MK18, 20-in .308 bolt-action, and 9mm HK MP5. Multi-caliber test report. Do multi-caliber silencers perform well on several different weapons? Sometimes yes, sometimes no. You can put this silencer on anything from 9mm to .338 Lapua Magnum. Technical Discussion. (00:08:36)

a. Intro and recap (00:10:17)

b. Universe-36 overview (00:13:32)

c. Universe-36 silencer design (00:22:30)

d. Hazard Map Brief 8.1.20 (00:35:14)

e. System performance (00:53:22)

f. Overall thoughts (01:07:54)

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1. Sound Signature Review 6.222 – the JK Armament PRO-KOR 556K on the 10.3-in 5.56 MK18. The last MK18 data we published was back in December. How does this new advanced entry from JK Armament fair compared to the competition? The Top 5 and Bottom 5 performers on the MK18 are showcased in this report. Technical discussion. (00:06:54)

a. Intro and recap (00:06:21)

b. PRO-KOR 556K overview (00:11:14)

c. PRO-KOR 556K silencer design (00:22:44)

d. Hazard Map Brief 8.1.19 (00:43:21)

e. System performance (00:49:23)

f. Overall thoughts (01:11:11)

2. Sound Signature Review 6.223 – the Otter Creek Labs Universe-36 on the 10.3-in 5.56 MK18, 20-in .308 bolt-action, and 9mm HK MP5. Multi-caliber test report. Do multi-caliber silencers perform well on several different weapons? Sometimes yes, sometimes no. You can put this silencer on anything from 9mm to .338 Lapua Magnum. Introductory discussion for today’s report. (01:14:20)

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1. Sound Signature Review 6.222 – the JK Armament PRO-KOR 556K on the 10.3-in 5.56 MK18. The last MK18 data we published was back in December. How does this new advanced entry from JK Armament fair compared to the competition? The Top 5 and Bottom 5 performers on the MK18 are showcased in this report. Introductory discussion. (00:06:54)

2. Listener Questions are back! We last hit this segment in Episode 266 last year. Let’s wrap up the 7th Solicitation so we can get ready to answer your questions from Solicitation 8! (00:26:11)

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1. Sound Signature Review 6.220 – The new AAC 762-SDN-6 on the 14.5-in SR-25. First released in 2011, this is a brand-new iteration of this famous silencer refreshed for 2026. High flow rate, high performance, and updated for the modern age. Technical discussion of last week’s report.

a. Intro and recap (00:07:07)

b. 762-SDN-6 overview (00:14:03)

c. 762-SDN-6 silencer design (00:21:33)

d. Hazard Map Brief 8.1.17 (00:30:39)

e. System performance (00:38:10)

f. Overall thoughts (00:50:05)

2. Sound Signature Review 6.221 – The new AAC 762-SDN-6 on 300 BLK bolt-action. Originally developed to suppress multiple cartridges, 300 BLK was certainly advertised as one of the strengths of the original design. This new iteration is particularly strong, even with a high flow rate. Technical discussion of last week’s report.

a. Intro and recap (00:54:36)

b. Hazard Map Brief 8.1.18 (00:57:58)

c. System performance (01:06:24)

d. Overall thoughts (01:17:49)

3. Carrying full size guns is cool. We shoot them because they are really fun to shoot. So why not carry what you like to shoot? HK USP 45 Tactical (the MK23 Compact) is excellent. Match LEM Hybrid? Yes, please. (01:20:30)

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1. Sound Signature Review 6.219 – The Magco Arms EDS-30L on 20-in 308 bolt action. Extreme performance in an 8-inch length – it’s great to see newcomers to the space! Let’s go through the technical overview of last week’s publication.

a. Intro and recap (00:09:29)

b. EDS-30L overview (00:18:14)

c. EDS-30L silencer design (00:23:04)

d. Hazard Map Brief 8.1.16 (00:35:08)

e. System performance (00:42:47)

f. Overall thoughts (00:59:24)

2. Sound Signature Review 6.220 – The new AAC 762-SDN-6 on the 14.5-in SR-25.  No, it is not 2011! It is, in fact, 2026 – and this is a brand-new iteration of this famous silencer. High flow rate, high performance, and updated for the modern age. This is an introduction to the first of two reports published on this silencer today! (01:01:04)

2. Sound Signature Review 6.221 – The new AAC 762-SDN-6 on 300 BLK bolt-action.  What a time to be alive. A new AAC silencer being tested on a Q rifle? Historic event, and boy is this silencer a switch-hitter.  It is not often we see high performance with subsonic 300 BLK from high flow rate silencers. This is an introduction to the second of two reports published on this silencer today. (01:10:18)

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1. Sound Signature Review 6.217 – The CAT ST on the 14.5-in M4 midlength gas AR-15. New CAT rifle silencer using their SBX technology; a little different than SURGE BYPASS. Extremely high performance. Let’s dive in technically.

a. Intro and recap (00:09:54)

b. CAT ST overview (00:15:13)

c. CAT ST silencer design (00:23:52)

d. Hazard Map Brief 8.1.14 (00:36:20)

e. System performance (00:45:43)

f. Overall thoughts (01:09:44)

2. Sound Signature Review 6.218 – The CAT AKB on the 14.5-in SR-25.  Another new CAT rifle silencer – this time a universal 30 caliber model.  Different and smaller than their ODB.  Let’s examine the technical performance on this challenging test host.

a. Intro and recap (01:15:07)

b. CAT AKB overview (01:18:06)

c. CAT AKB silencer design (01:22:06)

d. Hazard Map Brief 8.1.15 (01:27:53)

e. System performance (01:31:50)

f. Overall thoughts (01:37:37)

2. Sound Signature Review 6.219 – The Magco Arms EDS-30L on 20-in 308 bolt action. Is there still room for newcomers in the 308 bolt gun field? I mean, I think you may be surprised. Optimized traditionally machined silencers like this, with this type of performance, are the backbone of silencer history. So, let’s check out this new entry and see what it can do in an 8-inch length! (01:39:59)

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1. Sound Signature Review 6.216 – The Rampart Range Suppression Carson 30 on the 14.5-in SR-25. Folks are coming forward to try their hand at taming short barrel 7.62 NATO semiauto. How is it progressing? Not too shabby. Infinity core derivative technical discussion of last week’s report.

a. Intro and recap (00:07:20)

b. Carson 30 overview (00:10:10)

c. Carson 30 silencer design (00:16:04)

d. Hazard Map Brief 8.1.13 (00:21:54)

e. System performance (00:33:48)

f. Overall thoughts (00:44:42)

2. Sound Signature Review 6.217 – The CAT ST on the 14.5-in M4 midlength gas AR-15.  New CAT rifle silencer using their SBX technology; a little different than SURGE BYPASS. How does their universal 5.56 silencer stack up? Well, it’s not normal, apparently. Intro discussion for today’s report. (00:47:55)

3. Sound Signature Review 6.218 – The CAT AKB on the 14.5-in SR-25.  Another new CAT rifle silencer – this time a universal 30 caliber model.  Different and smaller than their ODB.  This one seems to be at home on everything from subsonic things to a battle rifles… we’ll tackle the intro for that report today as well! (01:01:08)

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1. Sound Signature Review 6.215 – The Inert Haze Dreyse 30 on 20-in .308 bolt action. Do high performance silencers have to be long and heavy? Not always! Check out this new offering from the folks who brought you the Ti-P 9mm pistol silencer. Technical discussion.

a. Intro and recap (00:09:23)

b. Dreyse 30 physical overview (00:11:21)

c. Dreyse 30 silencer design (00:19:12)

d. Hazard Map Brief 8.1.12 (00:25:16)

e. System performance (00:34:06)

f. Overall thoughts (00:45:47)

2. Sound Signature Review 6.216 – The Rampart Range Suppression Carson 30 on the 14.5-in SR-25. Folks are coming forward to try their hand at taming short barrel 7.62 NATO semiauto. How is it progressing? Not too shabby. Check out this new Infinity core derivative in today’s report. Intro discussion. (00:49:58)

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1. Sound Signature Review 6.215 – The Inert Haze Dreyse 30 on 20-in .308 bolt action. Do high performance silencers have to be long and heavy? Not always! Check out this new offering from the folks who brought you the Ti-P 9mm pistol silencer. It is definitely fitting into the very competitive space in the upper Rankings on .308. Introduction to this report and Silencer Hazard Map Brief 8.1.12. (00:05:58)

2. Some great user feedback and questions about the HK MK23 KAC and B&T study (6.214). We’ll hit some of that feedback today in some public service announcements. (00:16:18)

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1. Sound Signature Review 6.214 – Suppressed .45 ACP Historical Case Study: HK MK23 and USP45 Silencers - KAC vs. B&T. Many of us have waited decades for this data and analysis. This PEW Science internal research program consists of six tests, suppressed and unsuppressed. The U.S. SOCOM MK23 Offensive Handgun (OHG) program high fidelity test report technical discussion. (00:07:16)

a. Intro and recap (00:09:20)

b. KAC MOD.MK23/USP and B&T Impulse-IIA SD Mk23 physical overview (00:30:36)

c. The KAC design and what they gave to B&T (00:41:34)

d. Pistol silencer inertial decouplers, boosters, and you (01:04:38)

e. Hazard Map Brief 8.1.11 (01:29:42)

f. MK23 system performance (01:36:53)

g. USP45 Tactical system performance (02:00:44)

h. Overall thoughts (02:06:44)

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1. Sound Signature Review 6.213 – Otter Creek Labs OCM5 and OCM6 reflex silencers on the 14.5-in M4A1RIII. This is the technical discussion to accompany last week’s report showcasing these exterior-clones of the classic OPS INC 12th model.

a. Intro and recap (00:08:49)

b. OCM5 and OCM6 physical overview (00:12:46)

c. OCM5 and OCM6 silencer design (00:18:22)

d. Hazard Map Brief 8.1.10 (00:29:12)

e. OCM family system performance (00:33:05)

f. Overall thoughts (00:52:25)

2. Sound Signature Review 6.214 – Suppressed .45 ACP Historical Case Study: HK MK23 and USP45 Silencers - KAC vs. B&T. It’s finally here! Many of us have waited decades for this data and analysis. This PEW Science internal research program consists of six tests, suppressed and unsuppressed. The U.S. SOCOM MK23 Offensive Handgun (OHG) program high fidelity test report is now in the Silencer Sound Standard! (00:56:20)

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1. Sound Signature Review 6.212 – Precision Armament TiTrex 300 on 20-in .308 bolt-action. Bolt action research is important, not only for user utility, but for the lessons learned in combustion propagation from the controlled host. This is the technical discussion to accompany last week’s report showcasing this efficient silencer.

a. Intro and recap (00:06:54)

b. TiTrex 300 physical overview (00:12:25)

c. TiTrex 300 silencer design (00:18:21)

d. Hazard Map Brief 8.1.9 (00:26:44)

e. System performance (00:33:32)

f. Overall thoughts (00:52:13)

2. Sound Signature Review 6.213 – Otter Creek Labs OCM5 and OCM6 reflex silencers on the 14.5-in M4A1RIII. Oh boy… cloners rejoice! As an homage to the famous OPS INC 12th model reflex silencer, Otter Creek Labs created these modern adaptations. Let’s go over an intro to today’s whitepaper characterizing the OCM family. A two-silencer special! (00:57:04)

3. Quick 300 BLK MCX “LVAW” update – added the Geissele MCX-SSA. Very simple addition, but with a few details. (01:10:17)

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1. Sound Signature Review 6.211 – Dillon DRC308 on the 14.5-in SR-25. Kicking off the SR-25 research progression, the larger brother of the previously evaluated DRC556 is put through its paces on this challenging host. This is the technical discussion to accompany the report published two weeks ago before SHOT show.

a. Intro and recap (00:06:03)

b. DRC308 physical overview (00:07:57)

c. DRC silencer design (00:12:06)

d. Hazard Map Brief 8.1.8 (00:17:26)

e. System performance (00:25:08)

f. Overall thoughts (00:43:33)

2. Sound Signature Review 6.212 – Precision Armament TiTrex 300 on 20-in .308 bolt-action. We haven’t published a bolt-action report since May of last year! Let’s revisit this ubiquitous and useful host platform to examine this highly optimized 3D-printed silencer. The performance is quite interesting! This discussion introduces today’s published report. (00:47:26)

3. Hunted again with the 300 BLK 6.75-in Sig MCX “LVAW!” Less than a week after my previous report to you in which I took a whitetail doe, I took a spike buck in late season with the same ammunition. Some lessons learned to report! (00:55:57)

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1. Public Research Supplement 6.210 – the 14.5-in 7.62 NATO KAC SR-25 Combat Carbine (CC) as a silencer test host. Semiautomatic 7.62 NATO testing is here. As typical, let’s look at the combustion propagation characteristics of the new host and see what the silencers will have to deal with as they tackle this new suppression challenge! (00:09:07)

2. Sound Signature Review 6.211 – Dillon DRC308 on the 14.5-in SR-25. Kicking off the SR-25 research progression, the larger brother of the previously evaluated DRC556 is put through its paces on this challenging host. In this introduction to today’s report publication, we’ll talk about the general performance and what we may expect going forward with semiauto 7.62 NATO testing, in general. Can the Dillon tame the beast? (00:25:16)

3. Hazard Map Brief 8.1.8 - Dillon DRC308 on the SR-25 7.62x51mm 14.5-in Barrel Automatic Rifle. Boy oh boy. When viewed spatially, how hazardous is the blast overpressure field from a suppressed 7.62 NATO system compared with a 5.56 NATO system? Big brother is here to show you why 7.62 is a different animal. Treat it with respect. (00:36:43)

4. Hunting medium size game with 300 BLK? A lot of you do. I am happy to report that I finally tried it, and it was successful. I’ll give you some of my initial thoughts on using the 6.75-in Sig MCX Rattler LT (LVAW analog) to take whitetail deer and what I would do differently next time, some pros, cons, etc. (00:43:23)

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1. Sound Signature Review 6.209 – Stealth Additive Works Tisha on the 10.3-in 5.56 MK18. What happens when high level engineering combines all the hybrid design principles we’ve been discussing on this podcast for years into a compact silencer design, and additive manufacturing makes it possible to produce? You get things like this. This is the technical discussion to accompany the report published 22-DEC-2025. (00:09:50)

a. Intro and recap (00:10:53)

b. Tisha physical overview (00:13:48)

c. Tisha silencer design (00:31:35)

d. Silencer Hazard Map Brief 8.1.7 (00:50:28)

e. System performance (01:02:20)

f. Overall thoughts (01:20:10)

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1. Sound Signature Review 6.209 – Stealth Additive Works Tisha on the 10.3-in 5.56 MK18. What happens when high level engineering combines all the hybrid design principles we’ve been discussing on this podcast for years into a compact silencer design, and additive manufacturing makes it possible to produce? You get things like this. The incredible joy it brings us to show you things like this are possible is the best Christmas gift we could ask for. Let’s introduce today’s publication, at a high level.  Also, Silencer Hazard Map Brief 8.1.7.

a. Intro to the intro (00:08:20)

b. Basic Tisha high level overview (00:15:12)

c. Industry implications (00:35:28)

2. YouTube. Otherwise known as “the controller of all videos on the internet.” Don’t kid yourself; if you are uploading things to YouTube, they control you to the extent you let them. On a positive note, let’s discuss why that’s OK, as long as you understand the implications. (00:51:15)

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1. Sound Signature Review 6.208 – SilencerCo Sparrow on the subcompact Beretta 21A Bobcat. Historically significant silencer, by popular demand. Long overdue. The Sparrow was SilencerCo’s first product and has enjoyed significant proliferation. Let’s dive into this FRP-famous silencer, technically. This accompanies last week’s report and Silencer Hazard Map Brief 8.1.6.

a. Introduction (00:07:35)

b. Sparrow Design (00:13:14)

c. Sparrow performance (00:21:08)

d. Spatial hazards (00:43:38)

e. Final thoughts (00:46:57)

2. The 300 BLK MCX, or Rattler LT, or LVAW, or whatever you want to call it… is really fun! Like any cool small arm weapon system, you want to make it “your own.” I am busy doing that. Wanted to share some thoughts about my own personal gun and what I have discovered I like, don’t like, and how it’s working for me. (00:48:59)

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1. Sound Signature Review 6.208 – SilencerCo Sparrow on the subcompact Beretta 21A Bobcat. Historically significant silencer, by popular demand. Long overdue. The Sparrow was SilencerCo’s first product and has enjoyed significant proliferation. Most folks know about its first-round-pop (FRP) on short barrels. Do you? Check it out in this introduction to today’s report! (00:07:13)

2. Silencer Hazard Map Brief 8.1.6 – SilencerCo Sparrow on the Beretta 21A Bobcat. This brief accompanies today’s report. The Silencer Hazard Map is animated! This allows you to visualize first round pop, which is one of the SilencerCo Sparrow’s pitfalls. Is the hazard field severity surprising to you? Have you ever shot a Sparrow? Many of you have! (00:22:52)

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1. Sound Signature Review 6.206 – Battle Born Supply Co. Whiskey Quebec 5.56 on the 14.5-in mid-length gas M4. The Purged version was evaluated in Report 6.207. This is the technical discussion accompanying those two analytical test reports, exploring the performance efficacy of Triply Periodic Minimal Surface (TPMS) baffle structures.

a. Intro and recap (00:06:56)

b. Basic TPMS geometry and applications to silencers, pros and cons (00:17:20)

c. Overall technical observations (00:29:25)

d. Conclusions (00:47:24)

2. Silencer Hazard Map Brief 8.1.5 – SilencerCo Saker 556 vs. the HUXWRX FLOW 556k on the MK18. Due to popular request to showcase a high backpressure conventional 5.56 silencer, we went back into the archives, all the way to Report 6.53 from 2021 and ran the test results through the PEW-SOFT HD Hazard Mapper. Does this Silencer Hazard Map for the Saker 556 help illustrate operator risk when using these types of legacy silencer designs? Can a HUXWRX FLOW 556k save you? Maybe not. (00:50:17)

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1. Sound Signature Review 6.206 – Battle Born Supply Co. Whiskey Quebec 5.56 on the 14.5-in mid-length gas M4. Inconel. 3D printed. Are there folks out here using 3D printing for things that are simply not machinable by traditional methods? Yes. This family of silencers is one of them. Let’s explore the performance of Triply Periodic Minimal Surface (TPMS) baffle structures in the intro to this report published with today’s episode. (00:08:06)

2. Sound Signature Review 6.207 – Battle Born Supply Co. Whiskey Quebec 5.56 Purged on the 14.5-in mid-length gas M4. This is the high(er) flow rate brother to the silencer we just discussed. Both silencers have high early-time flow rate. What if you increase the late time flow rate? Let’s check out the performance differentials in the intro to the second report published today. (00:27:16)

3. Silencer Hazard Map Brief 8.1.4 – Analytical test reports too long for you? Maybe you don’t have time to dig into them yet before you eat turkey and pumpkin pie? Not a problem. Hit this Brief for a succinct look at how the Whiskey Quebec 5.56 (Purged and non-Purged models) project hazards to personnel, spatially. Pictures are good! (00:34:15)

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1. Sound Signature Review 6.205 – Combat Application Technologies CAT BEN micro silencer on the subcompact Beretta 21A. Rimfire is back. Compact? Yes. Everyone wants to put small silencers on subcompact hosts. Sometimes that can be pretty loud. Does the BEN offer relief? Technical discussion for this report and PEW-SOFT HD Hazard Map published last week.

a. Introduction (00:06:42)

b. Silencer Hazard Map Brief 8.1.2 (00:14:36)

c. Technical performance (00:19:10)

d. Final thoughts (00:41:18)

2. Silencer Hazard Map Brief 8.1.3 – Unsuppressed MK18 in the free field. There has been a lot of talk about blast overpressure, human risk, and traumatic brain injury (TBI). This deliverable should help folks get more familiar with blast loads, understand blast overpressure in familiar terms, and help silencer folks become more familiar with traditional blast overpressure hazard and human risk vernacular. (00:46:09)

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1. Sound Signature Review 6.204 – Otter Creek Labs Infinity on 16.3-in and 12.6-in AK systems. The Infinity it one of the most characterized silencers by the PEW Science Laboratory. With the addition of these two tests, it brings the total amount of Infinity record numbers in the Rankings to 11. In this test program, the vented 7.62 end cap was used, exclusively. Technical discussion of this report that was published 22-OCT.

a. Intro and broad performance overview (00:07:43)

b. 16.3-in system performance (00:21:40)

c. 12.6-in system performance (00:32:07)

d. Overall thoughts (00:38:35)

2. Sound Signature Review 6.205 – Combat Application Technologies CAT BEN micro silencer on the subcompact Beretta 21A. Rimfire is back. Compact? Yes. Everyone wants to put small silencers on subcompact hosts. Sometimes that can be pretty loud. Does the BEN offer relief? Check out today’s report along with a bonus PEW-SOFT HD Hazard Map! Intro talk. (00:46:58)

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1. Today we are launching Section 8 of the Silencer Sound Standard: SSS.8 – Advanced Silencer Research. Outside of public view, PEW Science performs a significant amount of testing and engineering analysis on a variety of systems; most of which is never published. Not everything has to remain behind closed doors. Section 8 of the Standard presents further research advancements that are cleared for public release. (00:04:02)

2. The first section in Section 8 is live today with this episode! The first report in this section is SSS.8.1.1 - Introducing PEW-SOFT HD Hazard Maps. The Suppression Rating has made you powerful. Now, you will become even more powerful, as you navigate personnel hazards from silencers in both the free field and near reflecting surfaces; everywhere. We’ll walk you through the report in today’s talk. Here is an outline:

a. Introduction (00:08:22)

b. 8.1.1.1 - Dimensional Variations (00:20:12)

c. 8.1.1.2 - Free Field Data, and You (00:22:55)

d. 8.1.1.3 - PEW-SOFT HD Hazard Mapper (00:31:19)

e. 8.1.1.4 - MK18 Case Study: 556-RC2 vs. 556-RC3 vs FLOW 556k (00:41:04)

f. 8.1.1.5 - Reflections - Moving outside of the Free Field (01:02:20)

g. 8.1.1.6 - Conclusions and Acknowledgements (01:07:24)

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1. Sound Signature Review 6.204 – Otter Creek Labs Infinity on 16.3-in and 12.6-in AK systems. The Infinity it one of the most characterized silencers by the PEW Science Laboratory. With the addition of these two tests, it brings the total amount of Infinity record numbers in the Rankings to 11. In this test program, the vented 7.62 end cap was used, exclusively. Could AK suppression be the Infinity sweet spot? This is an introduction to the white paper published today. (00:08:37)

2. Quick note about blast overpressure. There are hundreds of reports at pewscience.com characterizing blast overpressure from suppressed small arms. What is it? Well, you actually already know. (00:25:07)

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1. Sound Signature Review 6.203 – Combat Application Technologies CAT CACM 556 on the standard 10.3-in untuned MK18. This is a system-optimized silencer, but PEW Science recommended a standard host platform be used for public evaluation. How does this latest SURGE BYPASS model perform in a 6-inch envelope? Technical discussion for last week’s report.

a. Intro (00:07:39)

b. Physical overview (00:19:39)

c. Silencer Design (00:32:21)

d. System Performance (00:47:58)

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1. Sound Signature Review 6.202 – Zastava ZVUK on a 16.3-in Yugoslavian AK-pattern system. Another U.S. tribute to the venerable Soviet PBS silencer! You saw the Wolverine performance last time. How does an even more modern PBS homage perform? Does this particular implementation of PIP bring the performance? Technical discussion for last week’s report. (00:09:12)

2. Sound Signature Review 6.203 – Combat Application Technologies CAT CACM 556 on the standard 10.3-in untuned MK18. This is a system-optimized silencer, but PEW Science recommended a standard host platform be used for public evaluation. How does this latest SURGE BYPASS model perform in a 6-inch envelope? The total performance may (or may not) surprise you. The 556 wars rage on; this is an introductory discussion for today’s whitepaper. (00:52:36)

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1. Sound Signature Review 6.202 – Zastava ZVUK on a 16.3-in Yugoslavian AK-pattern system. Another U.S. tribute to the venerable Soviet PBS silencer! You saw the Wolverine performance last time. How does an even more modern PBS homage perform? Does this particular implementation of PIP bring the performance? Introduction to today’s whitepaper.

a. Intro and aesthetics (00:05:30)

b. Technology and performance first look (00:11:41)

c. Initial thoughts about the competition and how the AK suppression space will unfold (00:21:30)

d. What to expect in this report (00:31:58)

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1. Public Research Supplement 6.200 – Unsuppressed 7.62x39mm AK-Pattern Rifles as Silencer Test Hosts. Zastava ZPAPM70 (16.3-in barrel), Arsenal SAM7R (16.3-in barrel), and Arsenal SAM7C (12.6-in barrel). Technical discussion of this new host platform. (00:06:54)

2. Sound Signature Review 6.201 – Dead Air Wolverine on every AK. How does this U.S. tribute to the venerable Soviet PBS silencer system perform? How does AK action noise manifest? How much does it matter? Can the Wolverine suppress your AK to levels of a modern suppressed AR-15? Technical discussion of last week’s whitepaper.

a. Intro (00:26:20)

b. Physical overview (00:34:08)

c. Silencer Design (00:42:53)

d. System Performance (00:45:45)

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1. Sound Signature Review 6.199 – Wolfpack Armory Disruptor 556 on the 14.5-in M4. There are a lot of new silencers and new silencer companies entering the space, and we say – the more the merrier. How does this conventionally designed offering stack up in the performance pedigree? This is the combined intro and technical discussion for the report published on 06-SEP. (00:08:23)

2. Public Research Supplement 6.200 – Unsuppressed 7.62x39mm AK-Pattern Rifles as Silencer Test Hosts. Zastava ZPAPM70 (16.3-in barrel), Arsenal SAM7R (16.3-in barrel), and Arsenal SAM7C (12.6-in barrel). In Soviet Russia… silencer suppresses… you? Ha! Let’s take a look at this interesting and historic platform. And… how do we make it quieter?! (00:28:11)

3. Sound Signature Review 6.201 – Dead Air Wolverine on every AK. How does this U.S. tribute to the venerable Soviet PBS silencer system perform? How does AK action noise manifest? How much does it matter? Can the Wolverine suppress your AK to levels of a modern suppressed AR-15? All that, and more, in this intro to today’s multi-test research publication. (00:36:28)

4. SIG MCX Suppressor Compliant Handguard Heat Mitigation. Just a note that the effort has started. Work in progress. Check out the progress here. (00:45:33)

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1. Sound Signature Review 6.198 – Microtech Defense R2K9 on the HK P30L. This modular pistol silencers offers lengths that are a bit longer than typical, but produce an interesting performance opportunity for users interested in such a design. How does the optimized k-baffle technology in the R2K9 stack up with current high performers on the market? Technical discussion for the report published last week. (00:06:53)

a. Intro (00:08:02)

b. Physical overview (00:15:22)

c. Silencer Design (00:37:49)

d. System Performance (00:46:42)

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1. Sound Signature Review 6.198 – Microtech Defense R2K9 on the HK P30L. It’s been about 5 years or so, give or take, since this silencer hit the market. It’s about as old as PEW Science. Was it ahead of its time? Or was it simply a diamond in the rough that folks glossed over? Check out this interesting modular pistol silencer and the fully-featured accessory package in this Member Funded research – intro talk for today’s white paper. (00:08:14)

2. The SIG MCX, or “LVAW” and its variants. 6.75” Rattler LT recreational use continues. Really hammering the system with subs and supers. And, have some ideas for heat mitigation. Let’s continue the discussion we had last week. (00:28:06)

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1. Sound Signature Review 6.197 – Combat Application Technologies CAT KK on the 10.3 5.56 MK18. Small silencer with performance that was a little surprising. Hybrid design advanced silencers continue to push the envelope. Technical discussion for the whitepaper published last week.

a. Intro and physical characteristics. (00:08:26)

b. Design, system performance, and mount considerations. (00:17:11)

c. Performance extrapolation. Possible? (00:45:31)

2. The SIG MCX, or “LVAW” and its variants. 6.75” Rattler LT recreational use has been underway. Some interesting findings to share from a recent range outing. Approximately 1000 rounds of various ammo brands, subs and supers, fired from the system with the SIG SD handguard. Practical? Absolutely not, if you shoot a lot. Here are some thoughts. (00:54:08)

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1. Sound Signature Review 6.196 – Otter Creek Labs Infinity on the 14.5-in mid-length gas M4A1. You’ve seen this durable, versatile silencer on everything from 7.62 NATO to subsonic 300 BLK to short barrel 5.56 NATO. What have we learned about the Infinity, and how its technology works? How does the hybrid Otter Creek Infinity technology respond to lowering blast load input severity with 5.56? Very interesting findings – this technical talk covers them.

a. Big Picture and – barrel length? Why does it matter, anyway? (00:09:04)

b. Solid 5.56 End Cap Performance (00:24:34)

c. Vented 5.56 End Cap Performance (00:50:32)

d. Vented 7.62 End Cap Performance (00:53:28)

e. Performance comparison and nuance (00:56:28)

2. Sound Signature Review 6.197 – Combat Application Technologies CAT KK on the 10.3 5.56 MK18. Hybrid design advanced silencers continue to push the envelope. The past 5 years have been full of tremendous performance gains, particularly in high pressure supersonic cartridge suppression. As the competition continues, how does form factor fit into the mix? The CAT KK, and others, bring that discussion to the forefront. Introductory talk for the whitepaper published today. (01:13:25)

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1. Sound Signature Review 6.195 – FOR Systems Monarch Recce on the 10.3 5.56 MK18. Speaking of form factor… this silencer is a little over 5 inches long, as tested, and it’s ready to party. Hybrid designs continue to be developed, and the status quo just might be changing. Do short 5.56 silencers have to be loud? Technical discussion of this whitepaper published last week.

a. Intro (00:06:58)

b. Physical overview (00:08:55)

c. Silencer design (00:14:28)

d. System performance (00:18:58)

2. Sound Signature Review 6.196 – Otter Creek Labs Infinity on the 14.5-in mid-length gas M4A1. You’ve seen this durable, versatile silencer on everything from 7.62 NATO to subsonic 300 BLK to short barrel 5.56 NATO. Have we solved its riddle yet? How does the hybrid Otter Creek Infinity technology respond to lowering blast load input severity with 5.56? Very interesting findings – intro talk for today’s publication. (00:41:33)

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1. Sound Signature Review 6.194 – Dillon Rifle Company DRC556 on the 14.5 5.56 M4. Oh my goodness – more Purposely Induced Porosity silencers? Yes. PIP is proliferating. How does this adaptation of the technology perform? Technical discussion for this paper published last week – the form factor wars are heating up!

a. Intro (00:05:10)

b. Physical overview (00:06:38)

c. Silencer design (00:09:00)

d. System performance (00:11:45)

2. Sound Signature Review 6.195 – FOR Systems Monarch Recce on the 10.3 5.56 MK18. Speaking of form factor… this silencer is a little over 5 inches long, as tested, and it’s ready to party. Hybrid designs continue to be developed, and the status quo just might be changing. Do short 5.56 silencers have to be loud? Learn more about why, or why not, in today’s report! (00:36:08)

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1. Sound Signature Review 6.194 – Dillon Rifle Company DRC556 on the 14.5 5.56 M4. Oh my goodness – more Purposely Induced Porosity silencers? Yes. PIP is proliferating. How does this adaptation of the technology perform? Form factor is becoming a hot topic lately. Let’s explore this new silencer from Dillon in this introductory discussion to the whitepaper published today! (00:03:58)

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1. Sound Signature Review 6.193 – Combat Application Technologies CAT/TSWIF on the 14.5 5.56 M4. This is a “blast diverter” micro silencer; it is intended to be used with blast diverters and flash suppressors from Apparition Instruments, Noveske Rifleworks, and others. Technical discussion of the whitepaper published last week. (00:08:22)

2. Sig 6.75 300 BLK Rattler LT backorder came in. How does it differ from the 6.75 Virtus TACOPS? Great question. It’s definitely similar, but also different. Initial observations and thoughts, as requested by many of you. Barrel and valve gas port sizes measured and on the PEW Science Small Arms Technical Data page of the website. (00:45:39)

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1. Sound Signature Review 6.193 – Combat Application Technologies CAT/TSWIF on the 14.5 5.56 M4. This is a “blast diverter” micro silencer; it is intended to be used with blast diverters and flash suppressors from Apparition Instruments, Noveske Rifleworks, and others. If you are avoiding SBR registration, does something like this work? Quick intro to the system. (00:07:35)

2. Listener Questions are Back! Let’s dive back into the 7th Solicitation. It’s been a minute. Let’s dive back in and answer your queries. (00:25:10)

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1. Sound Signature Review 6.192 – Engaged Industries Operator 5.56 on the MK18. Smaller diameter silencers making a comeback? Potentially. Does this silencer bring competitive performance to a crowded market? Technical discussion for this technical report published last week. (00:08:50)

2. Ongoing testing is awesome. New test hosts are awesome. New silencers are awesome. What a time to be alive! Let’s have a quick chat about where we see things going in the industry, as related to technology and performance. (00:41:20)

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1. Semiauto 300 BLK is here! Sound Signature Review 6.191 – Combat Application Technologies CAT/RAT on the 6.75-in SIG SAUER MCX AR-18 consumer retail LVAW analog in all three of its modular configurations (COVERT, FLOW, and Base). This is the technical talk for the report published last week.

a. Technical Intro (00:07:24)

b. SIG MCX technical performance factors (00:10:33)

c. CAT RAT COVERT performance (00:42:38)

d. CAT RAT FLOW performance (01:01:51)

e. CAT RAT Base performance (01:09:29)

2. Sound Signature Review 6.192 – Engaged Industries Operator 5.56 on the MK18. Smaller diameter silencers making a comeback? Potentially. Weight savings can be real – does this silencer bring competitive performance to a crowded market? Introductory discussion for this technical report published with today’s episode. (01:21:28)

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1. Sound Signature Review 6.190 – the Primary Weapon Systems PWS BDE 22 on the subcompact Beretta 21A (Bobcat). A little rimfire palate cleanser for you! Monocore, 3D printed, user serviceable. Technical discussion of this lightweight silencer’s performance that was characterized in last week’s report (00:09:09)

2. Semiauto 300 BLK is here! Sound Signature Review 6.191 – Combat Application Technologies CAT/RAT on the 6.75-in SIG SAUER MCX AR-18 consumer retail LVAW analog. The CAT RAT is modular – but not how we typically see. This is also more than an end cap change. Let’s introduce both this new test host and this new silencer system designed specifically for the SIG MCX and Rattler family of PDWs.

a. Topic Intro (00:35:33)

b. SIG MCX System Intro (00:39:40)

c. CAT RAT System Intro (00:51:33)

d. CAT RAT Program Intro (01:03:26)

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1. PEW Science Member Deals are here! Slowly but surely, we would like to give you members something a little extra – more than you get already. This is our way of thanking you for all of your amazing support! (00:08:08)

2. Sound Signature Review 6.189 – the Q Southpaw on the standard untuned MK18. Highly requested research study – funded by PEW Science Members! How does this update to the Q Trash Panda, for 5.56, address the performance deficiencies we saw with over-bore? This is the technical discussion of the whitepaper published 28-MAY. (00:12:26)

3. Sound Signature Review 6.190 – the Primary Weapon Systems PWS BDE 22 on the subcompact Beretta 21A (Bobcat). A little rimfire palate cleanser for you! Monocore? 3D printed? Certainly – and you can take it apart. Let’s take a look at this lightweight silencer in this intro talk for the research published with today’s episode. (00:52:23)

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1. Sound Signature Review 6.188 – Off Grid Scorpius on the Beretta 21A subcompact .22LR pistol. Some more rimfire data and analysis for you folks! Small. Light. Quiet. Technical discussion for the whitepaper published last week. (00:07:07)

2. Sound Signature Review 6.189 – the Q Southpaw on the standard untuned MK18. Highly requested research study – funded by PEW Science Members! How does this update to the Q Trash Panda, for 5.56, address the performance deficiencies? Or does it at all? Let’s talk about that in this intro topic for the whitepaper published today with this episode. (00:25:57)

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1. Sound Signature Review 6.186 – Sylvan Arms SA30TI with supersonic .308. Classic design; smaller diameter. Simple and secure mount. Technical discussion for this 30 caliber silencer whitepaper published last week! (00:08:14)

2. Sound Signature Review 6.187 – Sylvan Arms SA223TIS on the 14.5 M4. The shorter, dedicated 5.56 silencer to complement the SA30TI. Another classic, small diameter system with the same simple ACME thread secondary-retention. Technical discussion for this 5.56 silencer whitepaper published last week! (00:28:04)

3. Sound Signature Review 6.188 – Off Grid Scorpius on the Beretta 21A subcompact .22LR pistol. Some more rimfire data and analysis for you folks! Small. Light. Quiet? Please check out the report to find out! Intro talk for this lightweight 3D printed rimfire silencer whitepaper published today with this episode. (00:46:27)

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1. Big shout-out to Mark and the Hunt Backcountry Podcast! Mark invited me to speak with him a while back about “Suppressor Science, Selection, and Sound” in sort of a “hunting centric” fashion. Please check out Episode 523 of their podcast when you can! (00:09:18)

2. Sound Signature Review 6.185 – Otter Creek Labs Infinity with subsonic 300 BLK. The Q mini Fix – an 8-in barrel proving ground, from the beginning. How does the versatile Infinity handle subsonic ammunition combustion out of a relatively short barrel? How does its performance compare with some older designs and some purpose-built 300 BLK designs? Technical discussion for this technical paper published 30-APR. (00:11:37)

3. Sound Signature Review 6.186 – Sylvan Arms SA30TI with supersonic .308. Classic design; smaller diameter. Simple and secure mount. Let’s take a look at this 30 caliber silencer in this introductory topic to the whitepaper published today with this episode! (00:37:36)

4. Sound Signature Review 6.187 – Sylvan Arms SA223TIS on the 14.5 M4. The shorter, dedicated 5.56 silencer to complement the SA30TI. Another classic, small diameter system with the same simple ACME thread secondary-retention. This is the introductory topic to the second whitepaper published today with this episode! (00:46:16)

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1. Sound Signature Review 6.183 – BOE Mod 1 on the 14.5-in mid-length gas 5.56 M4A1. Yet another player entering the 5.56 suppression space. 3D printing involved? Of course. A bit of a twist with some conventional elements? Yes! This is the technical discussion to accompany the technical paper published on 16-APR.

a. Introduction (00:07:56)

b. Physical Characteristics (00:12:13)

c. Performance Characteristics (00:25:53)

d. Performance Comparisons (00:38:29)

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1. Sound Signature Review 6.185 – Otter Creek Labs Infinity with subsonic 300 BLK. The Q mini Fix – an 8-in barrel proving ground, from the beginning. How does the versatile Infinity handle subsonic ammunition combustion out of a relatively short barrel? How does its performance compare with some older designs and some purpose-built 300 BLK designs? Can it hang? Introductory discussion for this technical paper published today. (00:05:49)

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1. Member Research Supplement 6.184 – The Quietest 9mm Silencers - MP5 Silencer Detailed Loudness and Tone Comparisons. We compare the loudness, tone, and severity of the CAT MOB, Dead Air Wolfman, GSL Phoenix, HUXWRX CASH 9K, Otter Creek Labs Lithium, PTR VENT 2, and Resilient RS9. Who comes out on top, and how? (00:06:14)

2. Listener Questions – back again! More from the 7th solicitation. Let’s continue where we left off last episode. (00:16:23)

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1. Sound Signature Review 6.183 – BOE Mod 1 on the 14.5-in mid-length gas 5.56 M4A1. Yet another player entering the 5.56 suppression space. 3D printing involved? Of course. A bit of a twist with some conventional elements? Yes! This is the introductory discussion to accompany the technical paper published concurrently with this episode. (00:07:08)

2. Listener Questions – they’re back! More from the 7th solicitation. Your queries are numerous, thought provoking, and useful! Chances are, someone has the same questions as you do. Let’s continue to do our best to answer them! (00:25:24)

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1. Sound Signature Review 6.182 – the Dead Air Wolfman on the HK SP5 – in both long and short configurations. Prolific (and also misunderstood) submachine gun silencer. Let’s dive into the technical discussion of the data and analysis published last week.

a. Introduction (00:07:46)

b. Physical Characteristics (00:17:31)

c. Technical Performance – Long Configuration (00:27:10)

d. Technical Performance – Short Configuration (00:44:04)

e. MP5 Suppression Performance Comparisons (00:51:09)

2. Pending Member Research – MP5 suppression. The Quietest 9mm Subgun Silencers. We all know and love the MP5 platform. It is, perhaps, one of the most famous and refined subgun silencer hosts that we have in small arms. So, which silencers help it to perform at its greatest potential? Which have the best signature reduction and tone? Ongoing in-depth signature research that will be delivered exclusively to PEW Science Members. Thank you for your support! (00:58:35)

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1. The Silencer Sound Standard is now 5 years old! Thank you for supporting PEW Science all of these years and helping make this the industry standard for silencer sound suppression performance. (00:09:05)

2. Big thanks to Oklahoma State University! Engineering faculty and students attended our seminar last week – a very welcoming group of people who are learning about fire, explosions, and protecting the public! A great degree program for folks that are interested. (00:30:06)

3. Sound Signature Review 6.181 – the Echo Zulu Defense X1R556-Ti on the 5.56 standard untuned mid-gas 14.5-in barrel M4A1. Another hybrid design. Let’s dig into the technical talk for this report published last week. (00:42:45)

4. Sound Signature Review 6.182 – the Dead Air Wolfman on the HK SP5 – in both long and short configurations. Prolific submachine gun silencer? Absolutely. Misunderstood? Clearly. Let’s do a quick introduction to this technical report published concurrently with this episode. (01:28:29)

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1. Sound Signature Review 6.181 – the Echo Zulu Defense X1R556-Ti on the 5.56 standard untuned mid-gas 14.5-in barrel M4A1. Yet ANOTHER hybrid design? Yes. Now, are there levels to this? Also, yes. What happens when certain parameters are changed and slightly deviate from some core design principles? Introductory discussion for this whitepaper published with today’s episode. (00:06:24)

2. PEW Science testing continues! The first quarter of 2025 has been very interesting; new hosts, new silencers, and all sort of things to show you. How far can the performance gauntlet take us? That’s literally what we are trying to determine! (00:22:21)

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1. Sound Signature Review 6.180 – the Centurion Arms Maximus-L on the 5.56 standard untuned MK18. Another hybrid design, and another dedicated 5.56 model. This is the technical discussion for the report published last week.

a. Introduction. (00:08:55)

b. Metrics – what are they good for, anyway? (00:14:25)

c. Maximus-L and the competition. (00:19:24)

d. Report technical deep dive. (00:29:22)

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1. Sound Signature Review 6.180 – the Centurion Arms Maximus-L on the 5.56 standard untuned MK18. Oh, my goodness gracious. Yet another hybrid design on the market?! The humanity! Dedicated 5.56 model, Inconel, light weight…. Does it bring the performance? This is the introductory discussion for the report published today with this episode. (00:06:37)

2. The Walther PPK-SD chambered in .32ACP. We got it back from RMA! What was fixed? Apparently, a common issue. No more light strikes! A quick update on this potential future test host and the slow progress of its proving ground. (00:28:57)

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1. Sound Signature Review 6.178 – the Otter Creek Labs Infinity on .308 bolt-action. New hybrid design silencer from OCL – two tests; both solid and vented 7.62 end caps. Technical discussion of the Infinity’s .308 performance.

a. Intro and Infinity physical characteristics (00:07:34)

b. Solid 7.62 end cap technical performance walkthrough (00:29:31)

c. Vented 7.62 end cap technical performance walkthrough (00:36:58)

d. Performance comparisons (00:45:44)

2. Sound Signature Review 6.179 – the Otter Creek Labs Infinity on the 5.56 standard untuned MK18. Three tests! Solid 5.56 end cap, vented 5.56 end cap, and the vented 7.62 end cap. Adjustable back pressure. Technical discussion of the Infinity’s 5.56 performance.

a. Intro and Polonium and Infinity 5.56 semiauto behavior (00:49:43)

b. Solid 5.56 end cap performance notes (01:11:15)

c. Vented 5.56 end cap performance notes (01:13:10)

d. Vented 7.62 end cap performance notes (01:15:26)

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1. Sound Signature Review 6.178 – the Otter Creek Labs Infinity on .308 bolt-action. New hybrid design silencer from OCL – two tests; both solid and vented 7.62 end caps. How does this technology perform with 7.62 NATO? Introductory discussion for this whitepaper published today. (00:09:35)

2. Sound Signature Review 6.179 – the Otter Creek Labs Infinity on the 5.56 standard untuned MK18. Three tests! Solid 5.56 end cap, vented 5.56 end cap, and the vented 7.62 end cap. Adjustable back pressure? Yes. How does each configuration perform? Introductory discussion for this lengthy study published today. (00:23:48)

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1. Sound Signature Review 6.177 – the Dead Air Mojave 9 on the HK P30L. Long and short configuration. Triskelion baffle technology. Technical discussion covering the performance of this new hybrid design in the market. What makes the new 3D-printed Dead Air technology tick? Subtopic timestamps:

a. Introduction: (00:06:42)

b. Physical design characteristics: (00:09:48)

c. Long configuration technical performance: (00:30:30)

d. Short configuration technical performance and summary: (00:48:58)

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1. Sound Signature Review 6.177 – the Dead Air Mojave 9 on the HK P30L. Long and short configuration. Triskelion baffle technology. Another hybrid design in the market? You betcha! Highly requested research project and we went pretty deep! Find out what makes the new 3D-printed Dead Air technology tick in this latest whitepaper. This is the introductory discussion. (00:07:07)

2. Listener Questions are back! It’s been a minute! We’ll dig back into the 7th solicitation and continue to address your queries. Sit back, relax, and let’s learn about silencers and silencer accessories! (00:25:26)

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1. PEW Science Rankings Table Refresh – easier to use? Maybe. More organized? Definitely. Color-coded risk metrics? Finally! Please check out the update if you haven’t. It’s in both the public and member Rankings sections. (00:07:35)

2. Sound Signature Review 6.175 – the PTR VENT Spiritus 556i on the standard 10.3-in MK18. The VENT series is back – this time in Inconel, a 6-in long package, and with an extremely advanced design. PTR military technology has trickled-down to consumers and it’s very interesting. Technical discussion of this report. (00:18:40)

3. Sound Signature Review 6.176 – the PTR VENT Spiritus 556i on the standard 14.5-in M4A1RIII mid-gas system. Really amazing physical discovery in this test program! And, exceptional performance demonstration. Let’s talk about what you can expect when you lengthen your barrel with this silencer. Technical discussion of this second report. (00:55:55)

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1. Sound Signature Review 6.175 – the PTR VENT Spiritus 556i on the standard 10.3-in MK18. The VENT series is back – this time in Inconel, a 6-in long package, and with an extremely advanced design. PTR military technology has trickled-down to consumers and it’s very interesting. The shooter’s ear hazard reduction is wild. This is the introductory discussion for this technical report published today. (00:09:05)

2. Sound Signature Review 6.176 – the PTR VENT Spiritus 556i on the standard 14.5-in M4A1RIII mid-gas system. Really amazing physical discovery in this test program! And, exceptional performance demonstration. Let’s talk about what you can expect when you lengthen your barrel with this silencer. Introductory talk for the 2nd publication of today! (00:23:10)

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1. Sound Signature Review 6.174 – B&T Station SIX 9 with the wiped SIX 9 silencer and the Training SIX 9 silencer. This is the technical discussion of the article published last week. Two silencers are featured in this test program. Subtopic timestamps:

a. Topic intro (00:07:12)

b. Station SIX 9 pistol operational overview (00:11:20)

c. Wiped SIX 9 silencer physics and behavior (00:25:40)

d. SIX 9 Training silencer performance (01:11:54)

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1. Sound Signature Review 6.174 – B&T Station SIX 9 with the wiped SIX 9 silencer and the Training SIX 9 silencer. Kicking off 2025 with some B&T, as requested. Quiet? I mean, you be the judge, I guess. Old technology doesn’t create miracles all of a sudden. Maybe that is a good or handy axiom to kick off 2025. Introductory discussion for this extensive paper published today. All member funded! (00:08:37)

Happy New Year!

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1. Sound Signature Review 6.173 – LMT AT ION LT on the standard 556 MK18. Lewis Machine & Tool has an Advanced Technologies division. We have been working with them as their 3rd party performance validator during some of their system development. This is the technical discussion for the report published last week. (00:07:18)

2. Merry Christmas! If we don’t speak again before next Wednesday, I hope your Christmas with your family and loved ones is wonderful, full of joy, great food, great company, amazing blessings, and is all you could have dreamed. This is the best time of year – spend it being thankful, reflect, and enjoy!!! Get out there and shoot a reindeer! (01:00:33)

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1. Sound Signature Review 6.172 – Rugged Suppressors Obsidian 9 on the HK P30L. Long configuration AND short configuration. Two tests. Chances are, you have shot this. This is the technical discussion of the article published 27-NOV. (00:06:33)

2. Sound Signature Review 6.173 – LMT AT ION LT on the standard 556 MK18. Lewis Machine & Tool has an Advanced Technologies division. We have been working with them as their 3rd party performance validator during some of their system development. This is an introductory discussion for the ION LT report published today. (00:48:11)

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1. Thanksgiving is almost here!!! What are you thankful for? Any particular silencer innovations to be thankful for? There may be some! (00:08:34)

2. Sound Signature Review 6.172 – Rugged Suppressors Obsidian 9 on the HK P30L. Long configuration AND short configuration. Two tests. Long awaited? Yes. Worth it? I mean, maybe. Chances are, you have shot this, so hopefully this gives you some good performance peg points! Introductory discussion for today’s publication. (00:30:29)

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1. Sound Signature Review 6.170 – Liberty Precision Machine Anthem-S2 QD on .308 bolt-action. The new iteration of the Anthem series from LPM. Technical discussion of last week’s publication. (00:08:36)

2. Sound Signature Review 6.171 – Liberty Precision Machine Anthem-S2 QD again – this time with subsonic 300 BLK. You saw its titanium big brother, the Mach-L, last month. Do you lose much going shorter? Technical discussion of last week’s second publication. (00:32:08)

3. I was on the Open Source Defense podcast! If you haven’t heard of that organization, they have a cool publication and newsletter you can check out! (00:55:42)

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1. Sound Signature Review 6.170 – Liberty Precision Machine Anthem-S2 QD on .308 bolt-action. The new iteration of the Anthem / Mach series from LPM. Any improvements to note? Introductory discussion for today’s publication. (00:05:36)

2. Sound Signature Review 6.171 – Liberty Precision Machine Anthem-S2 QD again – this time with subsonic 300 BLK. You saw its titanium big brother, the Mach-L, last month. Do you lose much going shorter? You may be surprised! Introductory discussion for today’s second publication! (00:19:42)

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1. Suppressing the Walther PPK SD in .32 ACP. Will it work? Examining our sample size of one, there appear to be caveats. Here’s a short update on our progress with the system so far. The quest to be James Bond continues… (00:14:22)

2. Listener Questions are back! We’re taking a break from publications this week after a busy October. Let’s answer some of your queries from the 7th round. Be sure to follow the podcast page on Instagram to keep up with these solicitations! (00:50:54)

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1. Sound Signature Review 6.167 – the HUXWRX FLOW 556 Ti on the standard 5.56 MK18 10.3-in SBR. You have seen the HX-QD series, FLOW 556K, and FLOW 762 Ti evaluated in the Standard. How does this newest full-size dedicated 5.56 model stack up? Technical discussion. (00:09:45)

2. Sound Signature Review 6.168 – the HUXWRX FLOW 556 Ti on the standard 5.56 M4A1RIII 14.5-in mid-length gas SBR. Does the performance of HUXWRX Flow-Through technology scale with longer barrels? Technical discussion. (01:11:42)

3. Member Research Supplement 6.169 – Low Back Pressure 5.56 Silencer Performance - Flow-Through vs. SURGE BYPASS, PIP, and LBP. Head-to-head detailed comparisons. Who is the current king of the hill? Public discussion. (01:26:49)

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1. Sound Signature Review 6.165 – the Off Grid Suppressors Trident Ti on .308 bolt action. Another silencer company moving into the space, and with DMLS models. How do these hybrid designs perform with bolt action systems? Technical Discussion. (00:10:39)

2. Sound Signature Review 6.166 – the Off Grid Suppressors Operator Ti on the standard 5.56 MK18 10.3-in SBR. This is a dedicated 5.56 unit; how does the hybrid technology behave with semiauto use? Technical Discussion. (00:37:38)

3. Sound Signature Review 6.167 – the HUXWRX FLOW 556 Ti on the standard 5.56 MK18 10.3-in SBR. You have seen the HX-QD series, FLOW 556K, and FLOW 762 Ti evaluated in the Standard. How does this newest full-size dedicated 5.56 model stack up? Introductory discussion. (00:56:23)

4. Sound Signature Review 6.168 – the HUXWRX FLOW 556 Ti on the standard 5.56 M4A1RIII 14.5-in mid-length gas SBR. Does the performance of HUXWRX Flow-Through technology scale with longer barrels? Introductory discussion. (01:04:56)

5. Member Research Supplement 6.169 – Low Back Pressure 5.56 Silencer Performance - Flow-Through vs. SURGE BYPASS, PIP, and LBP. Head-to-head detailed comparisons. Who is the current king of the hill? Introductory discussion. (01:11:40)

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1. Sound Signature Review 6.165 – the Off Grid Suppressors Trident Ti on .308 bolt action. Another silencer company moving into the space, and with DMLS models. How do these hybrid designs perform with bolt action systems? Introductory discussion to accompany the whitepaper published today. (00:09:03)

2. Sound Signature Review 6.166 – the Off Grid Suppressors Operator Ti on the standard 5.56 MK18 10.3-in SBR. This is a dedicated 5.56 unit; how does the hybrid technology behave with semiauto use? Intro discussion for the second whitepaper published today. (00:15:31)

3. Listener Questions! Let’s continue with the 7th solicitation from Instagram. We certainly have more to go. Way over 500 questions and running! (00:23:56)

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1. Sound Signature Review 6.163 – the Liberty Precision Machine Mach-L on .308 bolt action. Check out how the updated Anthem 2 series technology performs in this titanium full-size adaptation. Technical discussion for the article published last week. (00:08:18)

2. Sound Signature Review 6.164 – the Liberty Precision Machine Mach-L on subsonic 300 BLK! How does the technology scale to this different combustion regime? Technical discussion to the second publication from last week. (00:44:48)

3. The Walther PPK SD in .32 ACP; 7.65mm Browning. The one true caliber? I mean, maybe. Low recoil. Looks pretty. Historic. James Bond-esque. Can you suppress it? Sure. Tread carefully, though. (01:01:30)

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1. Sound Signature Review 6.162 – the Combat Application Technologies CAT/SC/B1 on the HK P30L. Full power subsonic 9mm. Check out how the CAT SB-SHOCK technology performs in the modular CAT SC, in both long and short configurations, in the analytical test report white paper published last week. Technical discussion. (00:09:55)

2. Sound Signature Review 6.163 – the Liberty Precision Machine Mach-L on .308 bolt action. High performance? Oh yes. Evolved from the previous LPM tech? Also yes. Check out how the updated Anthem 2 series technology performs in this titanium full-size adaptation. Introductory discussion for the article published concurrently with this episode. (01:03:09)

3. But wait – there’s more! Sound Signature Review 6.164 – the Liberty Precision Machine Mach-L on subsonic 300 BLK! How does the technology scale to this different combustion regime? Check out the article to find out! This is the introduction to the second publication accompanying this episode. (01:11:52)

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1. Sound Signature Review 6.162 – the Combat Application Technologies CAT/SC/B1 on the HK P30L. Full power subsonic 9mm. There have been several pivotal moments in pistol suppression over the past few decades. This may be another. Check out how the CAT SB-SHOCK technology performs in the modular CAT SC, in both long and short configurations, in the analytical test report white paper published with today’s episode. Introductory discussion. (00:09:39)

2. Listener Questions are back! Let’s head back into the 7th Solicitation and answer more of your queries. It has never been a better time to be a silencer consumer, in history. What types of things are you folks wondering about? (00:33:35)

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1. Sound Signature Review 6.161 – the Savage Arms AccuCan AC30 with 7.62mm NATO. You first saw the AccuCan AC22. How does the monocore design scale up to 30 caliber, and what type of performance can you expect from this lightweight bolt-action silencer? This is the technical discussion for the paper published last week. (00:09:19)

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1. Sound Signature Review 6.160 – the PTR VENT 1 with 7.62mm NATO. Purposely Induced Porosity (PIP). You saw it with 9mm… you saw it with 5.56. What happens when you tune it especially for this type of combustion regime? Technical discussion of the white paper published last week. (00:12:50)

2. Sound Signature Review 6.161 – the Savage Arms AccuCan AC30 with 7.62mm NATO. You first saw the AccuCan AC22. How does the monocore design scale up to 30 caliber, and what type of performance can you expect from this lightweight bolt-action silencer? This is the introductory discussion for the paper published concurrently with this episode. (01:25:24)

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1. Sound Signature Review 6.159 – the Combat Application Technologies CAT/DD/A1 with 7.62mm NATO! A bolt-action evaluation of this “K” silencer intended for use on reciprocating weapons. This is the technical discussion for this white paper published last week. (00:09:06)

2. Sound Signature Review 6.160 – the PTR VENT 1 with 7.62mm NATO. Purposely Induced Porosity (PIP). You saw it with 9mm… you saw it with 5.56. What happens when you tune it especially for this type of combustion regime? Can this type of tech pay dividends? Buckle. Up. Introductory discussion for one of the wildest test reports you have ever seen. (00:44:32)

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1. Sound Signature Review 6.159 – the Combat Application Technologies CAT/DD/A1 with 7.62mm NATO! A bolt-action evaluation of this “K” silencer intended for use on reciprocating weapons. How does it perform? What do we learn about its performance from this test program? Is there anything of note? Unusual performance, that’s for sure. This is the introductory discussion for this white paper published today with this episode! (00:08:25)

2. More data and analysis coming very soon. Continuing to explore a single combustion regime – but with different use cases! “Soon,” perhaps we will move into really stretching our 7.62 NATO evaluations with more complex cases. (00:30:57)

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1. Sound Signature Review 6.158 – the Gemtech Neutron 7.62 on .308 bolt-action! A lot of folks have used Gemtech silencers for many years. How does some of their newer technology perform, when compared to the large .308 performance pedigree in the Standard? Technical discussion for this white paper published last week. (00:09:40)

2. PEW Science research progression update. What to expect in the near term? Get your hunting rifles ready for deer season, as well as your sidearms. Gonna be a mix! (00:51:17)

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1. Sound Signature Review 6.158 – the Gemtech Neutron 7.62 on .308 bolt-action! A lot of folks have used Gemtech silencers for many years. How does some of their newer technology perform, when compared to the large .308 performance pedigree in the Standard? This is the introductory topic for this white paper published concurrently with this episode. (00:10:45)

2. Listener Questions are back! It’s that time again! Welcome to the 7th Solicitation. We got a lot of great ones from you folks – so let’s take a stab at starting to answer them today! (00:32:57)

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1. Sound Signature Review 6.157 – the Surefire SOCOM762-MINI2 on the MK18 5.56x45mm Short Barrel Automatic AR15 Rifle, with a comparison case study of Surefire Total Signature Reduction Technology. Can you use a 30-caliber silencer on 5.56 as expect good results? This is the technical discussion of the study published last week. (00:09:33)

In-depth article walk-through begins (00:19:26)

Other cases of performance variation, good and bad (00:38:12)

Member case study and the 556-RC3 (00:45:33)

5.56 Performance comparison with other silencers on the market (00:57:10)

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1. Sound Signature Review 6.157 – the Surefire SOCOM762-MINI2 on the MK18 5.56x45mm Short Barrel Automatic AR15 Rifle, with a comparison case study of Surefire Total Signature Reduction Technology. Can you use a 30-caliber silencer on 5.56 as expect good results? How well does the Surefire technology scale when you change venting, volume, and bore size? The PEW Science research pedigree has the answers. This is the introductory discussion to this whitepaper published today, so let’s talk big picture. (00:08:43)

2. Short topic – Are adjustable gas blocks bad? I mean, not really. Can they be? Yeah, sure. My kingdom for a compact, non-leaky block, with fine adjustments. (00:26:43)

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1. Sound Signature Review 6.156 – KAC 556 QDC/CRS-PRT and 556-QDC/MCQ-PRT System Optimization: SR-15 Carbine MOD 2, CQB MOD 2, M4A1RIII, and MK18 5.56x45mm Short Barrel Automatic AR15 Rifles. Introducing the PEW Science KAC 556 PRT System Optimization Tool!

16 test program. Let’s start off talking about the full size QDC/CRS-PRT first. Technical discussion. (00:06:05)

Interactive tool use for Topic 1 (00:38:25)

2. The other half of the PEW Science KAC 556 PRT study – the mini corn. Let’s talk about the QDC/MCQ-PRT. Small corn – does it give small performance? Yes and no. Technical discussion regarding this silencer. (00:51:30)

Interactive tool use for Topic 2 (01:09:20)

3. Overall comparisons. How does the KAC QDC PRT series stack up to the competition? (01:13:29)

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1. Sound Signature Review 6.156 – KAC 556 QDC/CRS-PRT and 556-QDC/MCQ-PRT System Optimization: SR-15 Carbine MOD 2, CQB MOD 2, M4A1RIII, and MK18 5.56x45mm Short Barrel Automatic AR15 Rifles. Introducing the PEW Science KAC 556 PRT System Optimization Tool!

In addition to the first fully-featured public interactive suppressed system optimization tool, this publication includes the following data, analysis, and content for your consumption, including testing with:

- Both full size and mini KAC 556 QDC silencers.

- Two muzzle devices (3-prong and MAMS).

- Four hosts (SR-15 Carbine MOD 2, CQB MOD 2, M4A1RIII, and MK18) – 16 tests, total.

This one took a village! Thank you for your support! This is the introduction to this PEW Science Laboratory internal research program publication. (00:09:50)

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1. Sound Signature Review 6.155 – The FOR Systems Monarch 7.62 on .308 bolt-action. High performing silencer on this ultra-competitive platform. How is FOR Systems accomplishing this performance, and what can we expect on other platforms? How does the Monarch compare with similar performing silencers like the Helios QD and Anthem-S? This is the technical discussion of the white paper published last week. (00:06:56)

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1. Sound Signature Review 6.155 – The FOR Systems Monarch 7.62 on .308 bolt-action. Boy howdy…. DMLS continues to be interesting. Inconel? Yes. Low(er) backpressure? Yes. Performance? Apparently so! Let’s check out this very interesting silencer in this introductory discussion to the article published today! (00:08:14)

2. Knee deep in the corn? Quite literally. KAC everywhere… and it’s not normal. We have been testing the daylights out of these PRT silencers and it’s been…… interesting. Just about every combination has been examined. The enthusiasts will certainly benefit! This is PEW Science funded internal research. (00:24:06)

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1. Sound Signature Review 6.154 – The Savage Arms AccuCan AC22 on the CZ452 .22LR bolt-action. The performance of this simple monocore silencer is quite interesting! This is the technical discussion of the white paper published on the AC22 last week. (00:09:24)

2. Host variability. Suppressed system performance depends upon the holistic system; which systems are the most susceptible to large performance swings, given user-changeable parameters? Well, the AR is one… (01:00:55)

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1. Sound Signature Review 6.154 – The Savage Arms AccuCan AC22 on the CZ452 .22LR bolt-action. Oh my goodness, more rimfire. And oh my goodness….. it’s from Savage! Pretty exciting when a major firearm company gets into silencers. This is an introductory discussion for the technical white paper published today, with this episode. (00:13:34)

2. Do you actually have to clean your silencers? Well, eventually, maybe. Why would it matter at all? Is it hard? It doesn’t have to be. We have received some questions from new silencer owners, so let’s go over some basics when it comes to basic silencer maintenance! Let’s talk about the technical reasons regarding why you would need to clean a silencer. This might be Part 1 of 2. (00:35:31)

Errata: In the initial publication of this article, the measured tested weight of the AC22 was listed as 2.8 ounces, which was in error. The correct tested weight of the AC22 is 3.3 ounces.

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1. Sound Signature Review 6.153 – The SilencerCo Omega 9K on the HK P30L. Pistol data and analysis is back! This is a technical discussion of the Omega 9K data and analysis, covering the white paper published last week. (00:10:45)

2. PEW Science 101 topic prep – thank you for your feedback! If you haven’t e-mailed your feedback of what you want to hear on the episode, please do so. By popular demand, this reference will be used to assist folks with a “crash course” introduction to the research! Your feedback is appreciated. (00:58:06)

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1. Sound Signature Review 6.153 – The SilencerCo Omega 9K on the HK P30L. Pistol data and analysis is back! A couple of years have gone by, but let’s revisit the venerable Omega 9K in this introductory discussion for this white paper published concurrently with this episode. (00:09:17)

2. PEW Science 101 – by request. For first time consumers, enthusiasts, and the general public – what main topics would you love to see in a 101 episode? You folks have asked - this reference would be used to assist folks with a “crash course.” Your feedback is welcome, for its preparation. (00:33:11)

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1. Listener Questions are back! Will we finally finish the 6th solicitation? Will we surpass the 500-question mark on the podcast?! All signs point to definitely maybe. (00:07:31)

2. Testing is difficult. Those that work in various experimental and research fields of engineering and other disciplines understand this first-hand. Overcoming adversity is also difficult. Nonetheless, we are excited to share that some great discoveries are occurring in the PEW Science research pedigree! (00:57:09)

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1. Listener Questions are back! That’s right – we’re continuing to answer your queries from the 6th solicitation. We’re not out of the woods yet, but we’re in the home stretch! Today we’ll cover food, toxic gas, hearing protection, testing, and more (as chosen by the listeners)! (00:07:14)

2. Thank you for your support. The PEW Science laboratory is run with grassroots contributions from all of you – and this podcast is made possible directly through that mechanism! It is a joy to keep doing this for the public. (00:59:34)

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1. Sound Signature Review 6.151: the Surefire SOCOM556-RC3 on the standard 10.3-in MK18. Two mounts. 3-Prong and closed-tine WARCOMP. Same old conclusion? No, actually. Technical discussion of this white paper published last week. (00:07:03)

2. Research Supplement 6.152: Surefire RC2 vs. RC3 - What Changed? The Quietest 5.56 Rifle Silencers - Taming the MK18, Part 5. We do a deep dive into the technologies in the RC2 and RC3 for PEW Science Members, and give actionable performance data for field use. (00:51:04)

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1. Listener Questions are back! We’ll hit a few more from the 6th Solicitation. Thank you, as always, for your participation in making the PEW Science public research and education effort the best in the industry and in the world. (00:08:09)

2. Sound Signature Review 6.151 – the Surefire SOCOM556-RC3 on the standard 10.3-in MK18. Two mounts. 3-Prong and closed-tine WARCOMP. Same old conclusion? No, actually. Introductory discussion of this white paper published with this episode. (00:53:51)

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1. 6 ARC Testing, and You. Do you care? You may. Does it matter? It matters to PEW Science – so, let’s make sure you get the data you need if you do, in fact, need it. (00:06:46)

2. Sound Signature Review 6.149 – the Otter Creek Labs Titanium on the .22LR CZ 452 bolt-action. Technical discussion for this whitepaper published last week. (00:22:23)

3. Sound Signature Review 6.150 – the Otter Creek Labs Titanium on the subcompact Beretta 21A. Technical discussion for this whitepaper, also published last week. (00:38:57)

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1. As promised – 3-lug mounting. What is it, why do we use it, and what options do you have as a silencer consumer in 2024? Should you care about the version used? Potentially, yes. (00:10:06)

2. Sound Signature Review 6.149 – the Otter Creek Labs Titanium on the .22LR CZ 452 bolt-action. Rimfire is back again! Introductory discussion for this technical whitepaper published today. (00:42:55)

3. Sound Signature Review 6.150 – the Otter Creek Labs Titanium on the subcompact Beretta 21A. Introductory discussion for this technical whitepaper, also published today! The 150th article in the Silencer Sound Standard. (00:49:15)

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1. Happy belated 4th birthday to the Silencer Sound Standard! In March of 2020, the PEW Science laboratory publicly launched the Standard that is used, worldwide, for objective analysis of suppressed system performance. (00:12:06)

2. Sound Signature Review 6.147 – the Combat Application Technologies CAT/JL/A1. The CAT JL on supersonic .308. Technical discussion of this paper that was published last week. This addresses CAT SNIPER2 technology. (00:23:17)

3. Sound Signature Review 6.148 – the Combat Application Technologies CAT/MOB/A1. The CAT MOB on the HK MP5. Technical discussion of this paper that was also published last week; this discussion addresses CAT DiVerge technology. (01:26:37)

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1. Sound Signature Review 6.146 – the Mercy Pluto on the CZ 452 16-in .22LR bolt-action. This is the technical discussion of the white paper published last week! (00:13:42)

2. Sound Signature Review 6.147 – the Combat Application Technologies CAT/JL/A1. The CAT JL on supersonic .308. Introductory discussion of this advanced system, and a first-look at the CAT SNIPER2 technology. (00:57:28)

3. Sound Signature Review 6.148 – the Combat Application Technologies CAT/MOB/A1. The CAT MOB on the HK MP5. Introductory discussion of this extremely interesting system, and a first-look at another CAT technology; DiVerge. (01:16:46)

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1. Sound Signature Review 6.146 – the Mercy Pluto on the CZ 452 16-in .22LR bolt-action. Rimfire is back again, baby! This is the introductory discussion for this whitepaper published concurrently with this episode. Is the Pluto small and light? Yes. Things are getting a little nuts! (00:13:35)

2. Rimfire pistol hosts. There are so many! We’ve been messing with the FN 502. It’s like the full size FNX series, but not. Hammer-fired, looks pretty cool, and seems to work OK. It has some idiosyncrasies – we’ll talk about those, the experience so far, and what folks look for in these types of hosts! (00:28:53)

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1. Sound Signature Review 6.145 – the Inert Haze Suppressors Ti-P on the HK P30L. This is the technical discussion of the article published last week, examining this design evolution of the Resilient Suppressors RSP. (00:07:48)

2. Tons of testing is going on right now, and there are some great technical articles coming your way. Huge thanks to our wonderful laboratory clients for trusting us to do this justice. Great big thanks and warm welcomes to all of you new PEW Science members! Form 4 approval times are quickly becoming interesting! (00:51:20)

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1. Listener Questions are back again! We continue to make our way through the 6th Solicitation. Looks like today we’ll tackle everything from pizza, to blast physics, to sparking, to predicative results, and beyond! (00:08:34)

2. Sound Signature Review 6.145 – the Inert Haze Suppressors Ti-P on the HK P30L semiauto combat handgun. Let’s revisit centerfire pistol silencers. We’ll take a look at this design evolution of the Resilient Suppressors RSP in this introductory discussion. (01:10:28)

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1. Sound Signature Review 6.144 – the Surefire SOCOM556-MINI2 on the 14.5 M4A1 midgas system. Two mounts – two tests! 3-Prong and WARCOMP. Technical discussion of the white paper published 06-MAR-2024. (00:07:45)

2. Mini field case study. MINI2 on the HK 416? Yes. Compared with the RC2? Yes. Field report from this past weekend. We took the feedback from 6.144 and put it into practice, ourselves. Is the Surefire 556-MINI2 low back pressure? Well, no. Does it have lower back pressure than the RC2? Well, yes. (00:58:36)

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1. Listener Questions! We’ll dive back into the 6th solicitation and answer more of your queries. Always a great time! (00:07:02)

2. 14.5-in M4 data is back, baby. Sound Signature Review 6.144 – the Surefire SOCOM556-MINI2 on the 14.5 M4A1 midgas system. With…. You guessed it – 3-Prong and WARCOMP mounts! Oh, WARCOMP mount…. Never change (just kidding – please stop leaking). Introductory discussion. (01:04:42)

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1. Sound Signature Review 6.142 – the Otter Creek Labs Polonium-30 on the standard .308 bolt-action. Technical discussion. (00:11:18)

2. Sound Signature Review 6.143 – the Otter Creek Labs Polonium-30 on the standard 5.56 MK18; technical discussion of this white paper published last week. (00:37:04)

3. More silencers, more testing, and more data! Research continues here at PEW Science – testing is ongoing with member funding as well as under contract from some great companies! The time to be into silencers has never been better. (00:53:14)

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1. Listener Questions are back! We’ll answer more of your queries from the 6th solicitation. (00:10:32)

2. Sound Signature Review 6.142 – the Otter Creek Labs Polonium-30 on the standard .308 bolt-action. Introductory discussion! (00:49:05)

3. Sound Signature Review 6.143 – the Otter Creek Labs Polonium-30, again – this time, on the standard 5.56 MK18! How does over-bore influence the performance of this design? Introductory discussion of this study. (00:56:37)

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1. Sound Signature Review 6.140 – Combat Application Technologies CAT/SR/A1 on the 16-in .22LR CZ 452 bolt action. Technical discussion. (00:07:34)

2. Sound Signature Review 6.141 – Combat Application Technologies CAT/SR/A1 on the subcompact Beretta 21A semiauto .22LR pistol. Technical discussion. (00:56:18)

3. Some administrative items – thank you for your patience during this busy time, and thank you PEW Science members for your support and your donations. The effort continues thanks to you! (01:30:33)

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1. Sound Signature Review 6.139 – AAC M4-2000 Mod 08 (Unvented) on the standard MK18 5.56 SBR. Historical and prolific silencer! Technical discussion of this white paper published last week. (00:10:14)

2. Sound Signature Review 6.140 – Combat Application Technologies CAT/SR/A1 on the 16-in .22LR CZ 452 bolt action. Introductory discussion of this ultralight, wild silencer. (00:56:29)

3. Sound Signature Review 6.141 – Combat Application Technologies CAT/SR/A1 on the subcompact Beretta 21A semiauto .22LR pistol. Can the CAT SR do both? Apparently, yes… and then some. Introductory discussion for this interesting dataset. (01:10:14)

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1. New publication this week! Sound Signature Review 6.139 – AAC M4-2000 Mod 08 (Unvented) on the standard MK18 5.56 SBR. Long time coming; this extremely prolific silencer is now added to the pedigree. Introductory discussion. (00:12:49)

2. Sound Signature Review 6.137 – Resilient Suppressors Jolene on 20-in .308 bolt action. Technical discussion of the article published 17-JAN-2024. (00:25:23)

3. Sound Signature Review 6.138 – Resilient Suppressors Jolene on 8-in 300 BLK subsonic bolt action. Technical discussion of the article published 17-JAN-2024. (00:53:20)

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1. Sound Signature Review 6.137 – Resilient Suppressors Jolene on 20-in .308 bolt action. More 7.62 data is here. An ultra lightweight silencer… how does it perform? This is an introductory discussion for this white paper published concurrently with this episode. (00:10:06)

2. Sound Signature Review 6.138 – Resilient Suppressors Jolene on 8-in 300 BLK subsonic bolt action! Good golly, Miss Molly – both supersonic and subsonic characterization for this lightweight system. Bring the quiet! Again – introductory discussion – two publications today! (00:19:52)

3. Listener Questions are back! Let’s dive into more if your queries from the 6th Solicitation. This is a great time! (00:26:22)

4. The NRA had some nice things to say about the PEW Science laboratory in January’s issue of Shooting Sports USA! Great to see the effort get some recognition nationwide, spurred on by your support! (01:01:15)

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1. Sound Signature Review 6.136 – Resilient Suppressors Jessie’s Girl on the Beretta 21A subcompact semiautomatic rimfire pistol. This is the technical discussion for this white paper, published 03-JAN-2024. (00:08:30)

2. Gas blowback out of your AR-15 ejection port. Do you know why it happens? When you add a silencer, does it change what happens unsuppressed? How do you know how much it will change? What are the variables? Let’s revisit this basic discussion. Often requested by PEW Science members. Part 1. (00:39:59)

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1. Sound Signature Review 6.136 – Resilient Suppressors Jessie’s Girl on the Beretta 21A subcompact semiautomatic rimfire pistol! An interesting silencer – an interesting host – and an interesting test! Let’s kick off 2024 with the introductory discussion for this white paper, published concurrently with this episode. (00:08:40)

2. Happy New Year! So glad to be back with all of you – let’s take a dive into Listener Questions again! We’ll hit more from the 6th solicitation. All questions are submitted by the public; this is a great opportunity to learn about things that you may want to know about! (00:18:19)

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1. Sound Signature Review 6.135 – PTR VENT 3 on the 5.56 MK18. This is the technical discussion of this silencer and white paper, published 13-DEC-2023. Very interesting silencer – the Purposely Induced Porosity (PIP) technology apparently has some legs! (00:07:58)

2. Merry Christmas from the PEW Science family to you and yours. The holiday is this coming Monday – hopefully you are able to spend it with your loved ones. Rejoice! Thank you all for making this a great year. How are you going to take advantage of the holidays? Should you get a MK23? (01:00:07)

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1. Sound Signature Review 6.135 – PTR VENT 3 on the 5.56 MK18. This is the introductory discussion for this white paper, published concurrently with this episode! Low back pressure wars are heating up – this is a very interesting time in silencer history. Which technologies demonstrate the highest degree of efficacy? (00:08:33)

2. The Surefire SOCOM556-RC3. PEW Science will be testing it, due to extremely popular demand from members and the public. The test specimen has been acquired. In the meantime, let’s talk about flash. This is topical due to a recent Surefire social media post highlighting the flash reduction phenomenology of the system (or lack thereof in certain configurations). (00:22:12)

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1. Sound Signature Review 6.134 – SilencerCo Velos LBP on the 5.56 MK18. This is the technical discussion for this long-awaited white paper, published last week! Again, big thanks to PEW Science members for making research like this possible. (00:08:53)

2. Sometimes it takes a village – KAC silencer system testing is in the works, with contributions from several folks! KAC 556 QDC-CRS/PRT, 556 QDC/MCQ-PRT, and in addition to MK18 and M4A1 midlength 14.5, maybe we do SR-15 Carbine MOD 2 14.5 and SR-15 CQB MOD 2 uppers for members. Oh, and MAMS and 3-Prong. Thanks to several PEW Science Members for making something like this possible. (00:59:51)

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1. Sound Signature Review 6.134 – SilencerCo Velos LBP on the 5.56 MK18. This is the introductory discussion for this long-awaited white paper, published today with this podcast episode! Huge thanks to PEW Science members for making this research possible. (00:06:04)

2. Listener Questions are back! That’s right – it’s time for the 6th solicitation. Fresh off of the presses, we just gathered all of your questions earlier this week, so we’ll kick off answering some from this new batch right now! If you didn’t get your question in this time, don’t worry – there will be more opportunities! (00:16:04)

3. Thank you for all your support – consumers, dealers, distributors, and manufacturers – you are all making this happen! It’s been a great year and it’s not even over yet! The state of suppressed small arms research is in your debt. (00:57:55)

Sponsored by - High End Armament Technology, Top Gun Range Houston, Legion Athletics, and the PEW Science Laboratory!

Legion Athletics: use code pewscience for 20% off your first order and double points!

Ammo from True Shot: Click Here! (use code pewscience for $20 off the A-Zone program)

Magpul: Use code PSTEN to receive $10 off your order of $100 or more at Magpul

1. Sound Signature Review 6.132 - BOSS Silencers Chairman (7.62) on the .308 bolt action. This is the technical discussion of this white paper released last week. A Tesla valve design principle? Maybe, but not exactly. (00:07:05)

2. Sound Signature Review 6.133 – BOSS Silencers Guillotine (5.56) on the 5.56 MK18. This is another silencer with analysis published last week – and this is the technical discussion for that article. (00:27:11)

3. Whitetail deer season is in full swing! I just had a great weekend hunt. Used traditional tools, with a silencer, during the day. At night? Advanced tools with silencers and thermal. Be the apex predator your tribe wants you to be. Hunting story time! (00:41:12)

Sponsored by - High End Armament Technology, Top Gun Range Houston, Legion Athletics, and the PEW Science Laboratory!

Legion Athletics: use code pewscience for 20% off your first order and double points!

Ammo from True Shot: Click Here! (use code pewscience for $20 off the A-Zone program)

Magpul: Use code PSTEN to receive $10 off your order of $100 or more at Magpul

1. Sound Signature Review 6.131 – the PTR VENT 2 on the HK SP5 (MP5 analog) – technical discussion for this white paper that was published 01-NOV. Purposely Induced Porosity (PIP) technology – does it work? Yeah, apparently. What an exciting time to add a new technology to the research pedigree! (00:07:18)

2. Sound Signature Reviews 6.132 - BOSS Silencers Chairman (7.62) and 6.133 – BOSS Silencers Guillotine (5.56) are live right now! That’s right. More data and analysis. This is the introductory discussion for these two whitepapers just published for this new PEW Science laboratory client. (00:44:34)

3. The Jay Situation Podcast YouTube Channel is now alive. The podcast syncing seems to be working seamlessly – glad to see the YouTube folks checking out the episodes! Thank you very much for all of your support of PEW Science – this has been such a great year so far and there is more data and analysis to come! (00:49:27)

Sponsored by - High End Armament Technology, Top Gun Range Houston, Legion Athletics, and the PEW Science Laboratory!

Legion Athletics: use code pewscience for 20% off your first order and double points!

Ammo from True Shot: Click Here! (use code pewscience for $20 off the A-Zone program)

Magpul: Use code PSTEN to receive $10 off your order of $100 or more at Magpul

1. Gas momentum, flow rate, reflections, and hazards. Do all silencers sound the same? No. When you change environments, do all silencers have signatures that change the same way? Also no. This topic is brought to you by a PEW Science Pro Member question. (00:07:52)

2. Sound Signature Review 6.129 and 6.130 – the CAT/WB/A1/718 on the 5.56 MK18 and M4A1 Mid-Gas, respectively! Combined technical discussion for the two white papers published 25-OCT. We’ll hit the technical discussion for SSS.6.131 with the PTR VENT 2 next time. (00:20:50)

3. The Jay Situation Podcast is now also on YouTube! That’s right! We’re also on YouTube Music. We have received a lot of requests for this. All episodes are available on the Jay Situation YouTube Channel now, and will be going forward! (00:57:05)

Sponsored by - High End Armament Technology, Top Gun Range Houston, Legion Athletics, and the PEW Science Laboratory!

Legion Athletics: use code pewscience for 20% off your first order and double points!

Ammo from True Shot: Click Here! (use code pewscience for $20 off the A-Zone program)

Magpul: Use code PSTEN to receive $10 off your order of $100 or more at Magpul

1. Sound Signature Review 6.128 – the Surefire SOCOM556-RC2 on the 5.56 M4A1 Mid-Gas with both 3-Prong and WARCOMP! This is the technical discussion covering the white paper published 22-OCT. (00:09:57)

2. Sound Signature Review 6.131 – the PTR VENT 2 on the HK SP5 (MP5 analog) – introductory discussion for this white paper that is live right now! Purposely Induced Porosity (PIP) technology – does it work? Yeah, apparently. (00:47:32)

Sponsored by - High End Armament Technology, Top Gun Range Houston, Legion Athletics, and the PEW Science Laboratory!

Legion Athletics: use code pewscience for 20% off your first order and double points!

Ammo from True Shot: Click Here! (use code pewscience for $20 off the A-Zone program)

Magpul: Use code PSTEN to receive $10 off your order of $100 or more at Magpul

1. Sound Signature Review 6.126 – the Liberty Precision Machine Torch on the 5.56 MK18. With both solid and vented end caps! This is the technical discussion of the PEW Science laboratory white paper released last week! (00:15:06)

2. Public Research Supplement 6.127 – the standard M4A1 test host! 14.5-in mid-length gas 5.56 testing is here! As is tradition, we have defined the standardized parameters for the research pedigree – with your help! Abbreviated discussion. (00:45:12)

3. Sound Signature Review 6.128 – the Surefire SOCOM556-RC2 on the 5.56 M4A1 Mid-Gas with both 3-Prong and WARCOMP! This is introductory discussion covering the white paper published Sunday. We’ve kicked off the 14.5 research progression! (00:53:11)

4. Sound Signature Review 6.129 – the CAT/WB/A1/718 on the 5.56 MK18! This is live right now. Yes. Introductory discussion for this much anticipated dataset! Small silencer. Interesting performance! (01:07:30)

5. And, in tandem…. Sound Signature Review 6.130 – the CAT/WB/A1/718 on the 5.56 M4A1 Mid-Gas. I told you we started 14.5 testing. We’ve actually done quite a bit. And, the client testing has already started too. Here is one of them! This should give you a great picture of how Surge Bypass technology scales. Introductory discussion. (01:15:40)

Sponsored by - High End Armament Technology, Top Gun Range Houston, Legion Athletics, and the PEW Science Laboratory!

Legion Athletics: use code pewscience for 20% off your first order and double points!

Ammo from True Shot: Click Here! (use code pewscience for $20 off the A-Zone program)

Magpul: Use code PSTEN to receive $10 off your order of $100 or more at Magpul

1. Sound Signature Review 6.125 – the Resilient Suppressors Jessie’s Girl on .22 bolt-action. This is the technical discussion of the PEW Science laboratory white paper released last week! (00:11:39)