SSS.6.141 - Combat Application Technologies CAT/SR/A1 and the Beretta 21A

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SSS.6.141 - Combat Application Technologies CAT/SR/A1 and the Beretta 21A

The Combat Application Technologies CAT/SR/A1 is a rimfire silencer that exhibits enhanced performance characteristics on a variety of rimfire host weapons of varied barrel length, including semiautomatic pistols with subsonic ammunition. It is rated for 5.7x28mm, and weighs only 2.8 ounces, as tested. The silencer exhibits no discernable first round pop in the tested combustion regime. Other than the removable end cap, the silencer is sealed; its monolithic DMLS titanium body may be cleaned with a variety of chemical solutions, including those offered by CAT.

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

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SSS.6.140 - Combat Application Technologies CAT/SR/A1 and the CZ 452 .22 Bolt-Action

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SSS.6.140 - Combat Application Technologies CAT/SR/A1 and the CZ 452 .22 Bolt-Action

The Combat Application Technologies CAT/SR/A1 is a rimfire silencer that exhibits enhanced performance characteristics on a variety of rimfire host weapons of varied barrel length, including bolt action rifles with subsonic ammunition. It is rated for 5.7x28mm, and weighs only 2.8 ounces, as tested. The silencer exhibits no discernable first round pop in the tested combustion regime. Other than the removable end cap, the silencer is sealed; its monolithic DMLS titanium body may be cleaned with a variety of chemical solutions, including those offered by CAT.

How would the CAT/SR/A1 perform on your .22 rimfire bolt action rifle?

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SSS.6.139 - AAC M4-2000 Mod 08 and the MK18 5.56x45mm Short Barrel Automatic AR15 Rifle

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SSS.6.139 - AAC M4-2000 Mod 08 and the MK18 5.56x45mm Short Barrel Automatic AR15 Rifle

The legacy AAC M4-2000 Mod 08 is a full size 5.56mm machine gun rated rifle silencer that exhibits high sound suppression performance and is competitive with modern designs.  The silencer exhibits a high degree of durability, as well as high back pressure.  It is important to note that there have been several design iterations of M4-2000 rifle silencers through the history of the original Advanced Armament Corporation.

In this review, the AAC M4-2000 Mod 08 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 AAC M4-2000 Mod 08 perform on your AR15 short barrel rifle?

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SSS.6.138 - Resilient Suppressors Jolene and the Q mini FIX 300 BLK Subsonic

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SSS.6.138 - Resilient Suppressors Jolene and the Q mini FIX 300 BLK Subsonic

The Resilient Suppressors Jolene is a 30 caliber rifle silencer that possesses significantly high supersonic centerfire rifle suppression performance with extremely light weight. Its subsonic suppression performance is also notable, despite exhibiting some first round pop.  The Jolene possesses a modular rear mounting interface that may be used with a variety of mounting solutions and muzzle devices; its included specialized direct thread mount is integral to its high performance, and results in a total system weight of 10.8 ounces, as tested.

How would the Resilient Suppressors Jolene perform on your personal defense weapon?

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SSS.6.137 - Resilient Suppressors Jolene and the Savage Model 10 PC .308

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SSS.6.137 - Resilient Suppressors Jolene and the Savage Model 10 PC .308

The Resilient Suppressors Jolene is a 30 caliber rifle silencer that possesses significantly high sound signature suppression performance on a supersonic centerfire rifle with extremely light weight. The Jolene possesses a modular rear mounting interface that may be used with a variety of mounting solutions and muzzle devices; its included specialized direct thread mount is integral to its high performance, and results in a total system weight of 10.8 ounces, as tested.

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

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SSS.6.136 - Resilient Suppressors Jessie's Girl and the Beretta 21A

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SSS.6.136 - Resilient Suppressors Jessie's Girl and the Beretta 21A

The Resilient Suppressors Jessie’s Girl is a high performing rimfire silencer on both short barrel semiautomatic pistols and bolt action rifles, with subsonic ammunition.  It is rated for up to 5.7x28mm for machine gun use, and weighs 6.0 ounces.  The silencer exhibits nominal first round pop in all tested combustion regimes, and is also user-serviceable.  Maintenance may be performed by cleaning the 17-4 heat treated stainless steel baffles in an ultrasonic cleaner or with solvents, following manufacturer instructions.  

How would the Resilient Suppressors Jessie’s Girl perform on your .22 semiautomatic pistol?

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SSS.6.135 - PTR VENT 3 and the MK18 5.56x45mm Short Barrel Automatic AR15 Rifle

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SSS.6.135 - PTR VENT 3 and the MK18 5.56x45mm Short Barrel Automatic AR15 Rifle

The PTR VENT 3 is a full size 5.56mm machine gun rated rifle silencer that exhibits significant sound suppression and back pressure reduction.  It is lightweight, possesses adaptable mounting, and exhibits some of the highest signature suppression performance on the standard MK18 weapon system of any silencer evaluated by PEW Science, to date.  The performance of the Purposely Induced Porosity (PIP) technology in the silencer, along with other portions of its design, is notable and represents further 3D-printed advancement in the suppressed small arms state of practice.

In this review, the PTR VENT 3 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 PTR VENT 3 perform on your AR15 short barrel rifle?

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SSS.6.134 - SilencerCo Velos LBP and the MK18 5.56x45mm Short Barrel Automatic AR15 Rifle

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SSS.6.134 - SilencerCo Velos LBP and the MK18 5.56x45mm Short Barrel Automatic AR15 Rifle

The SilencerCo Velos LBP is a full size 5.56mm machine gun rated rifle silencer that exhibits significant back pressure reduction and blast load hazard reduction for the weapon system operator on standard automatic rifles. The silencer is of hybrid design, utilizing both traditional silencer baffle elements and vent arrays to manage gas flow. For the SilencerCo system to accomplish high gross suppression performance at the operator’s position with its relatively simple design, is notable. The silencer is partially 3D-printed from Inconel alloy and is reported to exhibit significant durability.

In this review, the SilencerCo Velos LBP 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 SilencerCo Velos LBP perform on your AR15 short barrel rifle?

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SSS.6.133 - BOSS Silencers Guillotine and the MK18 5.56x45mm Short Barrel Automatic AR15 Rifle

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SSS.6.133 - BOSS Silencers Guillotine and the MK18 5.56x45mm Short Barrel Automatic AR15 Rifle

The BOSS Silencers Guillotine is a dedicated 5.56 caliber rifle silencer that possesses competitive suppression performance in its size class, in a lightweight envelope. The silencer uses heat treated stainless steel internals with a titanium outer tube, allowing for use on barrels 10.5 inches of length and greater. The BOSS Guillotine, along with its larger 30-caliber sister silencer, the Chairman, possesses a modular rear mounting interface that may be used with a variety of mounting solutions and muzzle devices.

In this review, the BOSS Guillotine 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 BOSS Guillotine perform on your AR15 short barrel rifle?

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SSS.6.132 - BOSS Silencers Chairman and the Savage Model 10 PC .308

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SSS.6.132 - BOSS Silencers Chairman and the Savage Model 10 PC .308

The BOSS Silencers Chairman is a 30 caliber rifle silencer that possesses competitive suppression performance in its size class, on a centerfire rifle. Both stainless steel and titanium internal configurations of the silencer are offered, to meet weight requirements of the user. The BOSS Chairman, along with its smaller 5.56mm sister silencer, the Guillotine, possesses a modular rear mounting interface that may be used with a variety of mounting solutions and muzzle devices.

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

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SSS.6.131 - PTR VENT 2 and the Heckler and Koch SP5 9x19mm Subgun

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SSS.6.131 - PTR VENT 2 and the Heckler and Koch SP5 9x19mm Subgun

The PTR VENT 2 is a full size 9mm silencer that exhibits significantly high sound signature suppression performance and low backpressure. Although it is intended for use on submachineguns, at 8.5 ounces and 7.6 inches long with no mount, it is close in size to many full size 9mm pistol silencers. The performance of the Purposely Induced Porosity (PIP) technology in the silencer, along with other portions of its design, is notable and represents further 3D-printed advancement in the suppressed small arms state of practice.

In this review, the PTR VENT 2 performance metrics depend upon suppressing a subsonic centerfire pistol cartridge on a roller-delayed blowback submachinegun. How would the PTR VENT 2 perform on your 9mm pistol caliber carbine (PCC)?

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SSS.6.130 - Combat Applications Technologies CAT/WB/A1/718 and the M4A1 Mid-Gas 5.56x45mm 14.5-in Barrel Automatic AR15 Rifle

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SSS.6.130 - Combat Applications Technologies CAT/WB/A1/718 and the M4A1 Mid-Gas 5.56x45mm 14.5-in Barrel Automatic AR15 Rifle

The CAT/WB/A1/718 (CAT WB) is a compact and extremely advanced 5.56mm machine gun rated rifle silencer that exhibits significant back pressure reduction and sound signature suppression performance, for its size. Its sound suppression performance on both medium and short barrel 5.56x45mm rifles is significant. Notably, the CAT SURGE BYPASS technology in the silencer appears to balance high flow rate behavior with superior overall signature suppression. The silencer is available in two 3D-printed material options; proprietary Inconel alloy and Titanium. The weights of both models are notable. The CAT WB represents one of the most advanced systems evaluated by PEW Science, to date.

In this review, the CAT WB 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 WB perform on your M4 with a 14.5-in barrel?

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SSS.6.129 - Combat Application Technologies CAT/WB/A1/718 and the MK18 5.56x45mm Short Barrel Automatic AR15 Rifle

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SSS.6.129 - Combat Application Technologies CAT/WB/A1/718 and the MK18 5.56x45mm Short Barrel Automatic AR15 Rifle

The CAT/WB/A1/718 (CAT WB) is a compact and extremely advanced 5.56mm machine gun rated rifle silencer that exhibits significant back pressure reduction and sound signature suppression performance, for its size. Its sound suppression performance on a short barrel 5.56x45mm rifle is significant. Notably, the CAT SURGE BYPASS technology in the silencer appears to balance high flow rate behavior with superior overall signature suppression. The silencer is available in two 3D-printed material options; proprietary Inconel alloy and Titanium. The weights of both models are notable. The CAT WB represents one of the most advanced systems evaluated by PEW Science, to date.

In this review, the CAT WB 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 WB perform on your AR15 short barrel rifle?

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SSS.6.128 - Surefire SOCOM556-RC2 and the M4A1 Mid-Gas 5.56x45mm 14.5-in Barrel Automatic AR15 Rifle

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SSS.6.128 - Surefire SOCOM556-RC2 and the M4A1 Mid-Gas 5.56x45mm 14.5-in Barrel Automatic AR15 Rifle

The Surefire SOCOM556-RC2 is a full-size 5.56mm machine gun rated rifle silencer that possesses competitive sound signature suppression performance with many silencers on the market, while possessing reduced back pressure compared to some designs. Users should note that full-size 5.56mm rifle silencers are often smaller than their full-size 7.62mm (.30) counterparts. The SOCOM556-RC2 was designed for the 10.3-in MK18 weapon system.

In this review, the Surefire SOCOM556-RC2 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 Surefire SOCOM556-RC2 perform on your M4 with a 14.5-in barrel?

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SSS.6.127- Research Supplement: Unsuppressed Rifles; the 14.5-in M4A1 Mid-Gas as a Silencer Test Host (Public Article)

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SSS.6.127- Research Supplement: Unsuppressed Rifles; the 14.5-in M4A1 Mid-Gas as a Silencer Test Host (Public Article)

Bolt-action weapons allow for the elimination of variables to study pure sound signature suppression phenomena. PEW Science is continuing bolt-action weapon testing, analysis, and research. 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 6.51, and automatic subgun signatures in Public Research Supplement 6.85, additional weapon system variables have been introduced that influence the sound fields, as mapped by the measured muzzle and at-ear signatures. 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 M4A1 Mid-Gas automatic rifle chambered in 5.56x45mm NATO.

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SSS.6.126 - Liberty Precision Machine Torch and the MK18 5.56x45mm Short Barrel Automatic AR15 Rifle

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SSS.6.126 - Liberty Precision Machine Torch and the MK18 5.56x45mm Short Barrel Automatic AR15 Rifle

The Liberty Precision Machine Torch is a full size 6mm centerfire rifle silencer that may be configured with the included solid or vented flash hiding end caps to allow the user to adapt it to various weapon systems. The silencer possesses high gross suppression performance and may also be adapted to mimic holistic signature performance of a Flow-Through silencer.  The Torch is stainless steel, possesses a nested blast baffle, and its gas dynamics allow for less over function of the AR-15 platform. The silencer also possesses a modular rear mounting interface that may be used with a variety of mounting solutions and muzzle devices.

In this review, the Liberty Precision Machine Torch 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 Torch perform on your AR15 short barrel rifle?

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SSS.6.125 - Resilient Suppressors Jessie's Girl and the CZ 452 .22 Bolt-Action

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SSS.6.125 - Resilient Suppressors Jessie's Girl and the CZ 452 .22 Bolt-Action

The Resilient Suppressors Jessie’s Girl is a high performing rimfire silencer on a bolt action rifle with subsonic ammunition. It is rated for up to 5.7x28mm for machine gun use, and weighs 6.0 ounces. The silencer exhibits nominal first round pop in the tested combustion regime, and is also user-serviceable. Maintenance may be performed by cleaning the 17-4 heat treated stainless steel baffles in an ultrasonic cleaner or with solvents, following manufacturer instructions.

How would the Resilient Suppressors Jessie’s Girl perform on your .22 rimfire bolt action rifle?

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SSS.6.124 - Research Supplement: Subsonic 300 BLK Suppression Performance - Flow-Through vs. Forward Flux vs. SURGE BYPASS vs. Conventional Silencers. Head-to-Head Detailed Comparisons (Members Only)

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SSS.6.124 - Research Supplement: Subsonic 300 BLK Suppression Performance - Flow-Through vs. Forward Flux vs. SURGE BYPASS vs. Conventional Silencers. Head-to-Head Detailed Comparisons (Members Only)

Five silencers evaluated by PEW Science are included in this members-only Research Supplement to examine relative First Round Pop (FRP) and overall sound signature suppression performance characteristics. The silencers in this group were selected for their relevance to the three rifle silencer technology classes: Conventional, High Flow Rate, and Hybrid Design. The five silencers behave differently, even despite some of them exhibiting similar performance quantified by the PEW Science Suppression Rating. Their subsonic 300 BLK suppression performance provides an excellent case study comparing current rifle silencer technology.

Many silencers exhibit significantly different performance when using supersonic and subsonic ammunition. In general, increasing gross flow rate through a silencer can significantly reduce signature suppression performance, particularly with subsonic ammunition.  However, certain designs may significantly outperform others in this regard.  Quantifying these performance differentials is essential for characterizing hazards to the system operator and bystanders.

This research supplement is intended to provide more information to PEW Science members with regard to specific sound signature characteristics of the tested configurations in the aforementioned reviews and to help frame objective loudness comparisons between five 30 caliber rifle silencers that use various technologies to suppress subsonic 300 BLK sound signatures. Both FRP and total sound signature suppression regimes are examined. This supplement is part of ongoing PEW Science small arm weapon system sound signature research. PEW Science thanks you for your support.

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SSS.6.123 - PWS BDE 556 and the MK18 5.56x45mm Short Barrel Automatic AR15 Rifle

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SSS.6.123 - PWS BDE 556 and the MK18 5.56x45mm Short Barrel Automatic AR15 Rifle

The PWS BDE 556 is a modular 5.56mm centerfire rifle silencer that may be configured as full-size or compact. The silencer possesses relatively high gross suppression performance in both its longest and shortest configurations, on the standard MK18 weapon system, while possessing higher back pressure compared to some designs. It is a titanium silencer of hybrid design, constructed with both DMLS and traditional subtractive manufacturing. With three different configurations, the BDE 556 is relatively unique as a modular rifle silencer and also possesses a modular rear mounting interface that may be used with a variety of mounting solutions and muzzle devices.

In this review, the PWS BDE 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 PWS BDE 556 perform on your AR15 short barrel rifle?

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SSS.6.122 - Combat Application Technologies CAT/ODB/A1/718 and the Q mini FIX 300 BLK Subsonic

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SSS.6.122 - Combat Application Technologies CAT/ODB/A1/718 and the Q mini FIX 300 BLK Subsonic

The CAT/ODB/A1/718 (CAT ODB) is a relatively compact and extremely advanced 30 caliber machine gun rated rifle silencer that exhibits significant back pressure reduction and sound signature suppression performance, for its size and caliber designation. Its sound suppression performance on both subsonic 300 BLK and short barrel 5.56x45mm is significant. Notably, the CAT SURGE BYPASS technology in the silencer appears to balance high flow rate behavior with significant overall signature suppression, even when over-bored for the cartridge and even when using subsonic ammunition, which is highly unusual. The silencer is available in two 3D-printed material options; proprietary Inconel alloy and Titanium. The weights of both models are notable. The CAT ODB represents one of the most advanced systems evaluated by PEW Science, to date.

How would the CAT ODB perform on your personal defense weapon?

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