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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SSS.6.121 - PWS BDE 762 and the Savage Model 10 PC .308

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SSS.6.121 - PWS BDE 762 and the Savage Model 10 PC .308

The PWS BDE 762 is a modular 30 caliber rifle silencer that may be configured as full-size or compact. The silencer possesses relatively high suppression performance in both its longest and shortest configurations, on a centerfire rifle. It is a titanium silencer of hybrid design, constructed with both DMLS and traditional subtractive manufacturing. With five different configurations, the BDE 762 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 BDE 762 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.6.120 - Combat Application Technologies CAT/ODB/A1/718 and the MK18 5.56x45mm Short Barrel Automatic AR15 Rifle

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SSS.6.120 - Combat Application Technologies CAT/ODB/A1/718 and the MK18 5.56x45mm Short Barrel Automatic AR15 Rifle

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 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, even when over-bored for the cartridge. 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.

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

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SSS.6.119 - Aero Precision Lahar-30L and the MK18 5.56x45mm Short Barrel Automatic AR15 Rifle

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SSS.6.119 - Aero Precision Lahar-30L and the MK18 5.56x45mm Short Barrel Automatic AR15 Rifle

The Aero Precision Lahar-30L is a mid-size 30 caliber precision rifle silencer that should be considered full-size or oversized relative to dedicated 5.56mm silencers. The Lahar-30L possesses significant sound signature suppression performance in this combustion regime, possesses an Inconel blast baffle, may be used on machineguns, and has no barrel length restrictions. Although high performance, the Lahar-30L exhibits higher back pressure than the shorter Lahar-30 variants, which may require weapon tuning for optimal signature reduction or weapon operation.

In this review, the Lahar-30L 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 Aero Precision Lahar-30L perform on your AR15 short barrel rifle?

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SSS.6.118 - AAC Ti-RANT 9M-HD, 9M, 9 and the HK P30L

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SSS.6.118 - AAC Ti-RANT 9M-HD, 9M, 9 and the HK P30L

The AAC Ti-RANT 9M-HD is preceded in development, design, and distribution by two legacy models; the AAC Ti-RANT 9M (2017) and the original AAC Ti-RANT 9 (circa 2009). At the time of distribution, the original Ti-RANT 9 was colloquially referred to as the “quietest 9mm centerfire pistol silencer” available. The publication of this case study in the Silencer Sound Standard research pedigree, by PEW Science, is intended to recognize the historical significance of the Ti-RANT 9 family of silencers and to provide a state-of-the-art performance evaluation of the models on a modern host firearm.

In this review, all AAC Ti-RANT 9 variant performance metrics depend upon suppressing a full-size handgun firing a full-power subsonic centerfire pistol cartridge. How would any AAC Ti-RANT 9 silencer perform on your self-defense handgun?

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SSS.6.117 - Abel Company Theorem-L and the Savage Model 10 PC .308

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SSS.6.117 - Abel Company Theorem-L and the Savage Model 10 PC .308

The Abel Company Theorem-L is a full-size 30 caliber precision rifle silencer that possesses significant sound signature suppression performance in this combustion regime. The silencer is relatively lightweight for its size. The Theorem-L possesses a modular rear mounting interface that may be used with a variety of mounting solutions and muzzle devices. The end cap of the silencer is also removable.

In this review, the Theorem-L 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.6.116 - Aero Precision Lahar-30 and the MK18 5.56x45mm Short Barrel Automatic AR15 Rifle

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SSS.6.116 - Aero Precision Lahar-30 and the MK18 5.56x45mm Short Barrel Automatic AR15 Rifle

The Aero Precision Lahar-30 is a compact 30 caliber precision rifle silencer that possesses significant sound signature suppression performance for its size, in this combustion regime. The silencer also possesses an Inconel blast baffle and may be used on machineguns, with no barrel length restrictions. The Lahar-30 represents one of the best examples of performance-based design optimization for a conventional baffle 30 caliber rifle silencer on the 5.56x45mm MK18 weapon system, to date.

In this review, the Lahar-30 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 Aero Precision Lahar-30 perform on your AR15 short barrel rifle?

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SSS.6.115 - Research Supplement: Flow-Through Silencers vs. Conventional Silencers. Head-to-Head Detailed Comparison - Nomad-Ti vs. FLOW 762 Ti vs. Thunder Chicken (Members Only)

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SSS.6.115 - Research Supplement: Flow-Through Silencers vs. Conventional Silencers. Head-to-Head Detailed Comparison - Nomad-Ti vs. FLOW 762 Ti vs. Thunder Chicken (Members Only)

Three 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 very similar holistic sound suppression performance; their similar PEW Science Suppression Rating on a supersonic centerfire bolt action rifle. The three silencers behave differently, despite their similar performance. Silencers with similar suppression performance sometimes have very different flow restriction, or back pressure, partially characterized by the PEW Science Omega Back Pressure Metric. These are three examples of such silencers.

The Suppression Rating is a Damage Risk Criterion (DRC). As such, it characterizes the postulated risk of hazard to bystanders, or the weapon operator, from a suppressed small arm weapon system. Despite achieving a similar Suppression Rating, some silencers may have certain signature characteristics that differ from others, and those differences are of interest to users.

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 three supersonic 308 rifle silencers that possess similar holistic sound suppression performance. 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.

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SSS.6.114 - HUXWRX FLOW 762 Ti and the MK18 5.56x45mm Short Barrel Automatic AR15 Rifle

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SSS.6.114 - HUXWRX FLOW 762 Ti and the MK18 5.56x45mm Short Barrel Automatic AR15 Rifle

The HUXWRX FLOW 762 Ti is a relatively compact and lightweight 30 caliber 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, its sound suppression performance at the shooter’s ear on a .308 bolt action rifle is competitive with that of advanced conventional baffle silencers. The silencer is constructed of 3D-printed Grade 5 Titanium and represents one of the most advanced systems evaluated by PEW Science, to date.

In this review, the FLOW 762 Ti 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 HUXWRX FLOW 762 Ti perform on your AR15 short barrel rifle?

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SSS.6.113 - HUXWRX FLOW 762 Ti and the Savage Model 10 PC .308

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SSS.6.113 - HUXWRX FLOW 762 Ti and the Savage Model 10 PC .308

The HUXWRX FLOW 762 Ti is a relatively compact and lightweight 30 caliber machine gun rated rifle silencer that exhibits significant back pressure reduction and sound signature suppression performance, for its size. Its sound suppression performance at the shooter’s ear on a .308 bolt action rifle is competitive with that of advanced conventional baffle silencers. The silencer is constructed of 3D-printed Grade 5 Titanium and represents one of the most advanced systems evaluated by PEW Science, to date.

In this review, the FLOW 762 Ti 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.6.112 - Aero Precision Lahar-30L and the Savage Model 10 PC .308

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SSS.6.112 - Aero Precision Lahar-30L and the Savage Model 10 PC .308

The Aero Precision Lahar-30L is a mid-size 30 caliber precision rifle silencer that possesses significant sound signature suppression performance for its size, in this combustion regime. The silencer also possesses an Inconel blast baffle and may be used on machineguns, with no barrel length restrictions. The Lahar-30L represents one of the best examples of performance-based design optimization for this combustion regime in the research pedigree, to date. PEW Science 5.56 testing and analysis results with the Lahar-30L are forthcoming.

In this review, the Lahar-30L 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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