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Today’s Topics: 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) Sponsored by - Silencer Shop, Top Gun Range Houston, Legion Athletics, Capitol Armory, and the PEW Science Laboratory! Legion Athletics: use code pewscience for BOGO off your entire first order and 20% cash back always! Magpul code PSTEN

Today’s Topics: 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) Sponsored by - Silencer Shop, Top Gun Range Houston, Legion Athletics, Capitol Armory, and the PEW Science Laboratory! Legion Athletics: use code pewscience for BOGO off your entire first order and 20% cash back always! Magpul code PSTEN

Today’s Topics: 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) Sponsored by - Silencer Shop, Top Gun Range Houston, Legion Athletics, Capitol Armory, and the PEW Science Laboratory! Legion Athletics: use code pewscience for BOGO off your entire first order and 20% cash back always! Magpul code PSTEN

Today’s Topics: 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) Sponsored by - Silencer Shop, Top Gun Range Houston, Legion Athletics, Capitol Armory, and the PEW Science Laboratory! Legion Athletics: use code pewscience for BOGO off your entire first order and 20% cash back always! Magpul code PSTEN

Today’s Topics: 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) Sponsored by - Silencer Shop, Top Gun Range Houston, Legion Athletics, Capitol Armory, and the PEW Science Laboratory! Legion Athletics: use code pewscience for BOGO off your entire first order and 20% cash back always! Magpul code PSTEN

Today’s Topics: 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) Sponsored by - Silencer Shop, Top Gun Range Houston, Legion Athletics, Capitol Armory, and the PEW Science Laboratory! Legion Athletics: use code pewscience for BOGO off your entire first order and 20% cash back always! Magpul code PSTEN

Today's Topics: 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) Sponsored by - Silencer Shop, Top Gun Range Houston, Legion Athletics, Capitol Armory, and the PEW Science Laboratory! Legion Athletics: use code pewscience for BOGO off your entire first order and 20% cash back always! Magpul code PSTEN

Today’s Topics: 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) Sponsored by - Silencer Shop, Top Gun Range Houston, Legion Athletics, Capitol Armory, and the PEW Science Laboratory! Legion Athletics: use code pewscience for BOGO off your entire first order and 20% cash back always! Magpul code PSTEN

Today’s Topic: 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) Sponsored by - Silencer Shop, Top Gun Range Houston, Legion Athletics, Capitol Armory, and the PEW Science Laboratory! Legion Athletics: use code pewscience for BOGO off your entire first order and 20% cash back always! Magpul code PSTEN

Today’s Topics: 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) Sponsored by - Silencer Shop, Top Gun Range Houston,Legion Athletics, Capitol Armory, and the PEW Science Laboratory! Legion Athletics: use code pewscience for BOGO off your entire first order and 20% cash back always! Magpul code PSTEN

Today’s Topics: 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) Sponsored by - Silencer Shop, Top Gun Range Houston, Legion Athletics, Capitol Armory, and the PEW Science Laboratory! Legion Athletics: use code pewscience for BOGO off your entire first order and 20% cash back always! Magpul code PSTEN

Today’s Topics: 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) Sponsored by - Silencer Shop, Top Gun Range Houston, Legion Athletics, Capitol Armory, and the PEW Science Laboratory! Legion Athletics: use code pewscience for BOGO off your entire first order and 20% cash back always! Magpul: Use code PSTEN to receive $10 off your order of $100 or more at Magpul

Today’s Topics: 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) Sponsored by - Silencer Shop, Top Gun Range Houston, Legion Athletics, Capitol Armory, and the PEW Science Laboratory! Legion Athletics: use code pewscience for BOGO off your entire first order and 20% cash back always! Magpul: Use code PSTEN to receive $10 off your order of $100 or more at Magpul

Today’s Topic: 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) Sponsored by - Silencer Shop, Top Gun Range Houston, Legion Athletics, Capitol Armory, and the PEW Science Laboratory! Legion Athletics: use code pewscience for BOGO off your entire first order and 20% cash back always! Magpul: Use code PSTEN to receive $10 off your order of $100 or more at Magpul

Today’s Topics: 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) Sponsored by - Silencer Shop, Top Gun Range Houston,Legion Athletics, Capitol Armory, and the PEW Science Laboratory! Legion Athletics: use code pewscience for BOGO off your entire first order and 20% cash back always! Magpul: Use code PSTEN to receive $10 off your order of $100 or more at Magpul