SSS.6.222 - JK Armament PRO-KOR 556K and the MK18 5.56x45mm Short Barrel Automatic AR15 Rifle

/
SSS.6.222 - JK Armament PRO-KOR 556K and the MK18 5.56x45mm Short Barrel Automatic AR15 Rifle

The  JK Armament PRO-KOR 556K is a mid- to full-size hard-use 5.56 rifle silencer with very high suppression performance with a balanced flow rate.  The silencer is printed from Haynes 282 alloy and uses advanced hybrid geometry to achieve efficient blast propagation control for its size. Blast hazard is projected forward, away from the operator. The silencer is HUB-mount compatible and its end cap is replaceable. This silencer is significantly different from previous modular JK Armament silencer designs and presents an example of the rapid advancement of rifle silencer suppression technology.

In this review, the JK Armament PRO-KOR 556K performance metrics depend upon suppressing a supersonic centerfire rifle cartridge on a short-barrel gas-operated rifle, which is an incredibly difficult task. How would the JK Armament PRO-KOR 556K perform on your MK18 with a 10.3-in barrel?

Read More

SSS.6.221 - AAC 762-SDN-6 and the Q mini FIX 300 BLK Subsonic

/
SSS.6.221 - AAC 762-SDN-6 and the Q mini FIX 300 BLK Subsonic

The AAC 762-SDN-6 is a midsize 30 caliber rifle silencer with significantly high suppression performance and flow rate. The silencer is an updated modern iteration of the legacy version that originally debuted in 2011. The new silencer is a hybrid design; manufacturing methods have advanced considerably in the fifteen years since the debut of the legacy silencer. Additive manufacturing, silencer combustion testing and analysis, and blast dynamics education have created an environment in which designers may take more efficient advantage of design envelopes. The silencer is roughly the same size as the legacy model and HUB-mount system compatible. The new 762-SDN-6 is constructed from 3D-printed Inconel alloy.

How would the AAC 762-SDN-6 perform on your personal defense weapon?

Read More

SSS.6.220 - AAC 762-SDN-6 and the KAC SR-25 7.62x51mm 14.5-in Barrel Automatic AR-10 Rifle

/
SSS.6.220 - AAC 762-SDN-6 and the KAC SR-25 7.62x51mm 14.5-in Barrel Automatic AR-10 Rifle

The AAC 762-SDN-6 is a midsize 30 caliber rifle silencer with significantly high suppression performance and flow rate. The silencer is an updated modern iteration of the legacy version that originally debuted in 2011. The new silencer is a hybrid design; manufacturing methods have advanced considerably in the fifteen years since the debut of the legacy silencer. Additive manufacturing, silencer combustion testing and analysis, and blast dynamics education have created an environment in which designers may take more efficient advantage of design envelopes. The silencer is roughly the same size as the legacy model and HUB-mount system compatible. The new 762-SDN-6 is constructed from 3D-printed Inconel alloy.

In this review, the AAC 762-SDN-6 performance metrics depend upon suppressing a supersonic centerfire rifle cartridge on a short barrel gas-operated 7.62 NATO rifle, which is an incredibly difficult task. How would the AAC 762-SDN-6 perform on your 14.5-in barrel battle rifle?

Read More

SSS.6.219 - Magco Arms EDS-30L and the Savage Model 10 PC .308

/
SSS.6.219 - Magco Arms EDS-30L and the Savage Model 10 PC .308

The Magco Arms EDS-30L is a full-size centerfire rifle silencer that possesses extremely high performance for its length.  At 8 inches long and 18.6 ounces with its included direct-thread mount, the stainless steel EDS-30L outperforms some silencers that are 25% longer.  Though the silencer does have some noticeable first-round-pop on the tested weapon system, its overall performance is strong and its stainless steel construction is likely durable enough for firing schedules more severe than typically allowed with competing titanium models. The HUB-compatible rear of the silencer allows the user to choose different silencer mounts, to their preference.

In this review, the Magco Arms EDS-30L performance metrics depend upon suppressing a supersonic centerfire rifle cartridge; no easy task. How would the silencer perform on your .308 deer rifle?

Read More

SSS.6.218 - Combat Application Technologies CAT/AKB and the KAC SR-25 7.62x51mm 14.5-in Barrel Automatic AR-10 Rifle

/
SSS.6.218 - Combat Application Technologies CAT/AKB and the KAC SR-25 7.62x51mm 14.5-in Barrel Automatic AR-10 Rifle

The Combat Application Technologies CAT AKB is a midsize 30 caliber rifle silencer with competitive muzzle suppression for its size and a flow rate conducive to effective use on various different weapon platforms, including semiautomatic rifles.  The SBX technology in the 3D printed Inconel CAT AKB is also used in the 5.56 CAT ST; this updated CAT silencer technology produces scalable performance on several common barrel lengths. The CAT AKB is also available in a titanium model, for reduced weight.  Both HUB mount system compatible and QD versions of the silencer are also available.

In this review, the CAT AKB performance metrics depend upon suppressing a supersonic centerfire rifle cartridge on a short barrel gas-operated 7.62 NATO rifle, which is an incredibly difficult task. How would the CAT AKB perform on your 14.5-in barrel battle rifle?

Read More

SSS.6.217 - Combat Application Technologies CAT/ST and the M4A1 Mid-Gas 5.56x45mm 14.5-in Barrel Automatic AR15 Rifle

/
SSS.6.217 - Combat Application Technologies CAT/ST and the M4A1 Mid-Gas 5.56x45mm 14.5-in Barrel Automatic AR15 Rifle

The Combat Application Technologies CAT ST is a full-size 5.56 rifle silencer intended for use on all common weapon system barrel lengths. Its suppression performance may be considered “state of the art,” and is extremely high relative to other systems on the current market. There exist no other silencers evaluated by the PEW Science Laboratory, as of the date of this publication, that exhibit the levels of pure suppression performance measured from the CAT ST on the M4 weapon system. The silencer is available in both 3D printed Inconel and Titanium models, in both QD or HUB-compatible variants. While the silencer has higher effective back pressure and first-round-pop (FRP) relative to previous generation CAT silencers, its FRP and flow rate performance are still strongly competitive with the rest of the market.

In this review, the CAT ST performance metrics depend upon suppressing a supersonic centerfire rifle cartridge on a commonly fielded gas-operated rifle, which is an incredibly difficult task. How would the CAT ST perform on your M4 with a 14.5-in barrel?

Read More

SSS.6.216 - Rampart Range Suppression Carson 30 and the KAC SR-25 7.62x51mm 14.5-in Barrel Automatic AR-10 Rifle

/
SSS.6.216 - Rampart Range Suppression Carson 30 and the KAC SR-25 7.62x51mm 14.5-in Barrel Automatic AR-10 Rifle

The Rampart Range Suppression Carson 30 is a midsize titanium battle rifle silencer with competitive muzzle suppression for its size and a flow rate conducive to effective use on the semiautomatic rifles. The 3D printed titanium modified Infinity core of the Carson 30 is lighter weight than typical and is intended for field duty use; not heavy continuous strings of fully automatic fire. The 11 ounce system is optimized for semiautomatic AR-10 platforms and the rear is HUB mount system compatible.

In this review, the Rampart Range Suppression Carson 30 performance metrics depend upon suppressing a supersonic centerfire rifle cartridge on a short barrel gas-operated 7.62 NATO rifle, which is an incredibly difficult task. How would the Rampart Range Suppression Carson 30 perform on your 14.5-in barrel battle rifle?

Read More

SSS.6.215 - Inert Haze Dreyse 30 and the Savage Model 10 PC .308

/
SSS.6.215 - Inert Haze Dreyse 30 and the Savage Model 10 PC .308

The Inert Haze Dreyse 30 is a full-size centerfire rifle silencer that possesses high performance for its length and weight. At 8.2 inches long and 9.8 ounces with its included specialty recessed direct-thread mount, the Dreyse 30 is extremely light weight. Its low relative first-round-pop severity and design envelope may be attractive to users fielding suppressed suppressed systems for hunting or other single-shot engagements. The HUB-compatible rear of the silencer allows the user to choose different silencer mounts, to their preference.

In this review, the Inert Haze Dreyse 30 performance metrics depend upon suppressing a supersonic centerfire rifle cartridge; no easy task. How would the silencer perform on your .308 deer rifle?

Read More

SSS.6.214 - Suppressed .45 ACP Historical Case Study: HK MK23 and USP45 Silencers - KAC vs. B&T

/
SSS.6.214 - Suppressed .45 ACP Historical Case Study: HK MK23 and USP45 Silencers - KAC vs. B&T

The KAC MOD.MK23/USP .45 ACP silencer is the historical “mother” silencer to which all modern centerfire pistol silencers owe their lineage. The development and refinement of the inertial decoupling piston system (also known as recoil booster, Neilson device, and linear inertial decoupler (LID), etc), by Qual-A-Tec in the 1980s set the groundwork for future innovation. Doug Olson’s career journey from Qual-A-Tec to Knights Armament Company brought not only pistol silencer recoil system innovation that made its way into the pivotal SOCOM MK23 Offensive Handgun program, but also highly efficient and deceptively geometrically complex crimped-cone baffle technology that permeated through most KAC silencer models over the last three decades.

The B&T Impulse line of silencers and specifically the Impulse-IIA SD Mk23 evaluated in this study, also owe lineage to KAC designs and further demonstrate the wide proliferation of these advancements, worldwide. The KAC and B&T silencers evaluated in this program remain the only two silencers officially accepted by Heckler and Koch for use on the MK23 and USP45 Tactical combat handguns. The research and development of centerfire pistol silencer inertial decoupling recoil mechanisms, and purposeful engineering to ensure system reliability and longevity, is a dying art. It is our hope that this research presentation helps to reignite that practice area and bring discussion of these small arm weapon system performance parameters back into public interest and scrutiny.

Read More

SSS.6.213 - Otter Creek Labs OCM5 and OCM6 and the M4A1 Mid-Gas 5.56x45mm 14.5-in Barrel Automatic AR15 Rifle

/
SSS.6.213 - Otter Creek Labs OCM5 and OCM6 and the M4A1 Mid-Gas 5.56x45mm 14.5-in Barrel Automatic AR15 Rifle

The Otter Creek Labs OCM5 and OCM6 rifle silencers are modern high performance reflex models sharing external aesthetic similarities with the historic OPS INC reflex silencers designed by the late Phil Seberger and manufactured by Ron Allen. Internally, the 5.56 mm bore OCM5 uses a highly efficient hybrid core design to provide extreme pure suppression performance, at the expense of higher back pressure. The 6 mm bore OCM6 uses a more modern Infinity core derivative and exhibits lower back pressure with a decrease in pure suppression performance compared to the OCM5. Both silencers may be easily mounted to standard AR-15 barrels using over-the-barrel (OTB) mounts from Otter Creek Labs, as long as there is adequate clearance aft of the barrel shoulder. These silencers provide “military clone” OPS INC silencer enthusiasts modern design options.

In this review, the Otter Creek Labs OCM5 and OCM6 performance metrics depend upon suppressing a supersonic centerfire rifle cartridge on a commonly fielded gas-operated rifle, which is an incredibly difficult task. How would the Otter Creek Labs OCM5 and OCM6 perform on your M4 with a 14.5-in barrel?

Read More

SSS.6.212 - Precision Armament TiTrex 300 and the Savage Model 10 PC .308

/
SSS.6.212 - Precision Armament TiTrex 300 and the Savage Model 10 PC .308

The Precision Armament TiTrex 300 is a midsize centerfire rifle silencer that possesses very high performance for its size. At only 6.2 inches long with the included direct-thread mount, the HUB compatible silencer is only 9.1 ounces, has exemplary first-round-pop suppression, and outperforms many larger silencers. The geometries of the baffle cones have been highly optimized through repeated experimentation. A unique feature of this 3D printed titanium silencer is the stainless steel Xband (the serialized part) permanently attached to the core. Upon core damage, the core may be destroyed to recover the serialized Xband, and a new core built and attached to the Xband, without modifying the serialized Xband component. In the same fashion, core upgrades would be possible.

In this review, the Precision Armament TiTrex 300 performance metrics depend upon suppressing a supersonic centerfire rifle cartridge; no easy task. How would the silencer perform on your .308 deer rifle?

Read More

SSS.6.211 - Dillon Rifle Company DRC308 and the KAC SR-25 7.62x51mm 14.5-in Barrel Automatic AR-10 Rifle

/
SSS.6.211 - Dillon Rifle Company DRC308 and the KAC SR-25 7.62x51mm 14.5-in Barrel Automatic AR-10 Rifle

The Dillon DRC308 is a midsize 7.62mm rifle silencer with competitive muzzle suppression performance for its size, optimized for automatic (reciprocating) rifle use. Constructed entirely of 3D-printed Inconel alloy, the silencer also offers the requisite durability for heavy firing schedules. The DRC308 is HUB-mountable and produces gross free field muzzle blast suppression on supersonic rifle platforms on par with some longer silencers; with the tested direct-thread mount, the silencer is only 6.84-in long. This performance, for form factor, is postulated to be significant. The back pressure induced by the DRC308 is not significantly high.

In this review, the Dillon DRC5308 performance metrics depend upon suppressing a supersonic centerfire rifle cartridge on a short barrel gas-operated 7.62 NATO rifle, which is an incredibly difficult task. How would the Dillon DRC308 perform on your 14.5-in barrel battle rifle?

Read More

SSS.6.210- Research Supplement: Unsuppressed Rifles; the 14.5-in KAC SR-25 as a Silencer Test Host (Public Article)

/
SSS.6.210- Research Supplement: Unsuppressed Rifles; the 14.5-in KAC SR-25 as a Silencer Test Host (Public Article)

Bolt-action weapons allow for the elimination of variables to study pure sound signature suppression phenomena. Other than sound transmission through the weapon system itself, there is one primary source of overpressure to atmosphere. Reciprocating (automatic) weapons introduce additional sources of overpressure to atmosphere, namely from their breach during function, which is necessary for ejection. Since the introduction of automatic rifle signatures into the Standard in Public Research Supplement 6.51and Public Research Supplement 6.127, and automatic subgun signatures in Public Research Supplement 6.85, additional weapon system variables have been introduced that influence the blast overpressure and sound fields, as mapped by the measured muzzle and at-ear signatures. These fields continue to be incorporated into the database of suppressed small arm weapon system performance, summarized in Section 7 of the Standard.  Hazard Map Briefs are now presented in Section 8 of the Standard to give users a visual spatial depiction of small arm personnel hazards. The purpose of this Public Research Supplement is to present a first-look at muzzle blast phenomenology for a new addition to the published host weapon systems in the Standard; the 14.5-in KAC SR-25 CC automatic rifle chambered in 7.62x51mm NATO.

Read More

SSS.6.209 - Stealth Additive Works Tisha and the MK18 5.56x45mm Short Barrel Automatic AR15 Rifle

/
SSS.6.209 - Stealth Additive Works Tisha and the MK18 5.56x45mm Short Barrel Automatic AR15 Rifle

The Stealth Additive Works Tisha is a compact titanium 5.56 rifle silencer with extreme suppression performance and balanced flow rate.  The silencer uses next generation technology, is only 4.1 inches long without a mount, and is HUB-mount compatible.  The Tisha is not only lightweight and smaller than most rifle silencers on the market, but it also outperforms all 5.56 suppression systems evaluated by the PEW Science Laboratory, as of the date of this report publication.  Its performance is unprecedented, regardless of size, and it lives up to its namesake.

In this review, the Stealth Additive Works Tisha performance metrics depend upon suppressing a supersonic centerfire rifle cartridge on a short-barrel gas-operated rifle, which is an incredibly difficult task. How would the Stealth Additive Works Tisha perform on your MK18 with a 10.3-in barrel?

Read More

SSS.6.208 - SilencerCo Sparrow and the Beretta 21A

/
SSS.6.208 - SilencerCo Sparrow and the Beretta 21A

The SilencerCo Sparrow is a full-size rimfire silencer that exhibits relatively competitive performance, on average, to modern designs.  However, its first-round-pop (FRP) suppression performance on short barrel weapons is significantly lacking.  A key feature of the Sparrow is its ease of disassembly for user maintenance.  Debuted as SilencerCo’s first product almost two decades ago, the Sparrow possesses internal clam shells that isolate the outer tube from the monolithic baffle core. The silencer is rated for most rimfire cartridges as well as 5.7x28mm, and has enjoyed significant proliferation throughout the market.

How would the SilencerCo Sparrow perform on your .22 semiautomatic pistol?

Read More

SSS.6.207 - Battle Born Supply Co. Whiskey Quebec 5.56 Purged and the M4A1 Mid-Gas 5.56x45mm 14.5-in Barrel Automatic AR15 Rifle

/
SSS.6.207 - Battle Born Supply Co. Whiskey Quebec 5.56 Purged and the M4A1 Mid-Gas 5.56x45mm 14.5-in Barrel Automatic AR15 Rifle

The Battle Born Supply Co. Whiskey Quebec 5.56 is a full size Inconel rifle silencer intended for hard use. Its relatively complex hybrid design does produce higher flow rate than several other competing models. This performance trait reduces operator hazard on some weapon systems. Note that the Whiskey Quebec is also available as a Purged model, which possesses higher late time flow rate, further reducing system back pressure and increasing operator protection. The silencer uses its included Flor De La Muerte mount, which is a combined flash hider and muzzle brake threaded 1/2-28tpi.

In this review, the Battle Born Supply Co. Whiskey Quebec 5.56 performance metrics depend upon suppressing a supersonic centerfire rifle cartridge on a commonly fielded gas-operated rifle, which is an incredibly difficult task. How would the Battle Born Supply Co. Whiskey Quebec 5.56 perform on your M4 with a 14.5-in barrel?

Read More

SSS.6.206 - Battle Born Supply Co. Whiskey Quebec 5.56 and the M4A1 Mid-Gas 5.56x45mm 14.5-in Barrel Automatic AR15 Rifle

/
SSS.6.206 - Battle Born Supply Co. Whiskey Quebec 5.56 and the M4A1 Mid-Gas 5.56x45mm 14.5-in Barrel Automatic AR15 Rifle

The Battle Born Supply Co. Whiskey Quebec 5.56 is a full size Inconel rifle silencer intended for hard use. Its relatively complex hybrid design does produce higher flow rate than several other competing models. This performance trait reduces operator hazard on some weapon systems. Note that the Whiskey Quebec is also available as a Purged model, which possesses higher late time flow rate, further reducing system back pressure and increasing operator protection. The silencer uses its included Flor De La Muerte mount, which is a combined flash hider and muzzle brake threaded 1/2-28tpi.

In this review, the Battle Born Supply Co. Whiskey Quebec 5.56 performance metrics depend upon suppressing a supersonic centerfire rifle cartridge on a commonly fielded gas-operated rifle, which is an incredibly difficult task. How would the Battle Born Supply Co. Whiskey Quebec 5.56 perform on your M4 with a 14.5-in barrel?

Read More

SSS.6.205 - Combat Application Technologies CAT/BEN and the Beretta 21A

/
SSS.6.205 - Combat Application Technologies CAT/BEN and the Beretta 21A

The Combat Application Technologies CAT/BEN is a subcompact “micro” rimfire silencer that exhibits enhanced performance characteristics for its size, including on short-barrel semiautomatic pistols with subsonic ammunition.  It is rated for 5.7x28mm, and is only 4.28 inches long.  At the time of evaluation, there have been no other rimfire silencers in the public research pedigree that exhibit the performance of the CAT BEN in the same length envelope in this combustion regime.  The silencer is sealed; its monolithic DMLS titanium body may be cleaned with a variety of chemical solutions.

How would the CAT BEN perform on your .22 semiautomatic pistol?

Read More

SSS.6.204 - Otter Creek Labs Infinity and 7.62x39mm Automatic AK-Pattern Rifles

/
SSS.6.204 - Otter Creek Labs Infinity and 7.62x39mm Automatic AK-Pattern Rifles

The Otter Creek Labs Infinity is a severe-use mid-size 30 caliber rifle silencer with an advanced but flexible hybrid design. In the role of a 7.62x39mm AK-pattern rifle silencer, it is considered full-size. The silencer is user-configurable for different blast load flow states and allows the operator to adapt the system to a variety of host weapons. With a high early-time flow rate, the silencer is well suited to reduce system back pressure. When utilizing its vented 7.62 end cap that increases late-time flow rate significantly, the Infinity performs well on standard untuned AK rifles and produces balanced and efficient performance, regardless of barrel length. The Infinity is 3D-printed from Inconel alloy and is expected to offer significant durability for hard use.

In this review, the Otter Creek Labs Infinity performance metrics depend upon suppressing a supersonic centerfire rifle cartridge on two AK-pattern gas-operated rifles, which is an incredibly difficult task. How would the Otter Creek Labs Infinity perform on your Bulgarian AK-pattern rifle with a 16.3-in or 12.6-in barrel?

Read More

SSS.6.203 - Combat Application Technologies CAT/CACM 556 and the MK18 5.56x45mm Short Barrel Automatic AR15 Rifle

/
SSS.6.203 - Combat Application Technologies CAT/CACM 556 and the MK18 5.56x45mm Short Barrel Automatic AR15 Rifle

The Combat Application Technologies CACM 556 is a standard size 5.56 rifle silencer intended for high pressure applications. The combination of suppression performance and back pressure reduction of the CAT CACM 556 is currently unprecedented in the research. At a total length of 6.1-in with its included mount, the silencer provides hazard reduction that exceeds that of a significant amount of models on the current market, and even models that are significantly larger. The CACM implementation of SURGE BYPASS technology in the silencer demonstrates the further industry advancement in hybrid designs that continues to eclipse the performance of legacy systems. Though the silencer is intended for use on the dedicated CAT CACM 556 rifle platform, silencers using the CACM technology are slated to be available from the NANO muzzle device developer, Apparition Instruments, with model designation 5CM.

In this review, the CAT CACM 556 performance metrics depend upon suppressing a supersonic centerfire rifle cartridge on a short-barrel gas-operated rifle, which is an incredibly difficult task. How would the CAT CACM 556 or AI 5CM perform on your MK18 with a 10.3-in barrel?

Read More