Silencer Sound Standard™
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SSS.6 - Sound Signature Reviews™
This page contains links to detailed Sound Signature Reviews of each silencer/host combination contained in the repository of Test Results, in accordance with the Silencer Sound Standard. We are excited to provide you with the best and most meaningful silencer sound reviews available. All white papers contain a Suppression Rating, only from PEW Science! Papers are released regularly.
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Free Public Reviews
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?
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?
The Zastava ZVUK is a 3D printed modern tribute to the Soviet Pribor Besshumnoy Stryelbiy (PBS) silencer system. Unlike the original PBS silencer designs, the ZVUK uses modern technology with a monolithic printed design possessing stepped baffles combined with Purposely Induced Porosity (PIP) under license, along with early blast chamber venting and secondary flow paths. These design differences result in significant pure suppression performance from the ZVUK and a higher gross flow rate than legacy systems.
In this review, the Zastava Arms ZVUK performance metrics depend upon suppressing a supersonic centerfire rifle cartridge on an AK-pattern gas-operated rifle, which is an incredibly difficult task. How would the Zastava Arms ZVUK perform on your AK-pattern rifle with a 16.3-in barrel?
The Dead Air Wolverine is a modern tribute to the Soviet Pribor Besshumnoy Stryelbiy (PBS) silencer system and is intended to suppress weapons of Soviet origin, such as several AK-pattern rifle variants with semiautomatic and automatic fire. Unlike the original PBS silencer design(s) the Wolverine uses modern baffle technology, materials, and construction. However, when compared to the current state of the art, the Wolverine’s internal design is relatively conventional. The signature suppression performance of the Wolverine, and its personnel hazard reduction, is relatively low when compared to many modern rifle silencers.
In this review, the Dead Air Wolverine performance metrics depend upon suppressing a supersonic centerfire rifle cartridge on three AK-pattern gas-operated rifles, which is an incredibly difficult task. How would the Dead Air Wolverine perform on your Bulgarian or Yugoslavian AK-pattern rifle with a 16.3-in or 12.6-in barrel?
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. PEW Science is continuing the aforementioned bolt-action and automatic rifle weapon testing, analysis, and research. 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; AK-pattern rifles chambered in 7.62×39mm.
The Wolfpack Armory Disruptor 556 is a full size and somewhat lightweight dedicated 5.56mm rifle silencer with HUB-mountable adaptability. With higher backpressure than many designs, weapon system tuning is highly recommended for the best user experience with this conventional baffle system. The silencer is fully welded, tubeless heat treated stainless steel, and is expected to be durable enough for most reasonable firing schedules. The end cap of the Disruptor 556 is removable for both repair and replacement.
In this review, the Wolfpack Armory Disruptor 556 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 Wolfpack Armory Disruptor 556 perform on your M4 with a 14.5-in barrel?
The Microtech Defense R2K9 is a higher performance modular centerfire pistol silencer with lengths in each configuration that are somewhat longer than typical. These lengths allow for interesting performance potentials, given that the silencer uses optimized legacy K-baffle technology. In the short configuration, the silencer is shorter than most full size pistol silencers but achieves performance higher than many “short configurations.” Users may find this balance of size and performance attractive. The R2K9 is user-serviceable and the retail package includes a plethora of accessory and maintenance components not typically found with competing models. Released to the market in the year 2020 timeframe, the Microtech R2K9 still brings competitive performance five years later, in a relatively lightweight envelope.
In this review, the Microtech Defense R2K9 performance metrics depend upon suppressing a full-size handgun firing a full-power subsonic centerfire pistol cartridge. How would the Microtech Defense R2K9 silencer perform on your self-defense handgun, in both long and short configurations?
The Combat Application Technologies Kitty Kat (CAT KK) is a compact centerfire 6mm rifle silencer intended for high pressure applications on short barrels. The combination of suppression performance and back pressure reduction of the CAT KK is unprecedented for its size. At a total length of 4.75-in with its included mount, the silencer provides hazard reduction that meets or exceeds that of a significant amount of models on the current market, in a very competitive form factor. The length-truncated implementation of SURGE BYPASS technology in the silencer demonstrates the further industry advancement in hybrid designs that continue to eclipse the performance of legacy systems.
In this review, the CAT KK 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 KK perform on your MK18 with a 10.3-in barrel?
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 5.56 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 may perform well on semiautomatic platforms even in its most restrictive configuration. For sensitive platforms, the user may fully vent blast loads from multiple stages of the silencer, lowering back pressure to a minimum for this design. The Infinity is 3D-printed from Inconel alloy and is expected to offer significant durability for hard use. The vented end cap configurations of the Infinity produce performance that scales well with increasing barrel lengths.
In this review, the Otter Creek Labs Infinity 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 Infinity with three of its different end caps perform on your M4 with a 14.5-in barrel?
The FOR Systems Monarch Recce is a compact high performance 5.56mm rifle silencer that is available in both 3D printed Inconel and titanium alloys. With extremely competitive gross signature suppression for its size, and a higher flow rate than typical for the type of performance it offers, the Monarch Recce represents a significant advancement in compact centerfire rifle suppression for the 10.3-in MK18 short barrel rifle. The silencer is HUB mount capable; the tested configuration is 5.13 inches long.
In this review, the FOR Systems Monarch Recce 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 FOR Systems Monarch Recce perform on your MK18 with a 10.3-in barrel?
The Dillon DRC556 is a somewhat compact dedicated 5.56mm rifle silencer with extreme muzzle suppression performance for its size. Constructed entirely of 3D-printed Inconel alloy, the silencer also offers the requisite durability for heavy firing schedules. The DRC556 is HUB-mountable and produces gross free field muzzle blast suppression on supersonic rifle platforms on par with that of much larger silencers; with its included direct thread mount, the silencer is only 5.75-in long. This performance, for form factor, is extremely significant. The back pressure induced by the DRC556 is not significantly high, though it is somewhat higher than some competing models in this performance class.
In this review, the Dillon DRC556 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 Dillon DRC556 perform on your M4 with a 14.5-in barrel?
The CAT TSWIF is a high performance low back pressure micro silencer intended to be used with pinned-and-welded blast diverter muzzle devices on 5.56 AR-15 weapon systems. Adding only 2.6 inches to the system length, the TSWIF provides consistent signature reduction expediently and in a compact package. The CAT TSWIF system is available in thread patterns compatible with blast diverters from Apparition Instruments, Noveske Rifleworks, and others. When compared to other compact silencers fielded on the typical 14.5-in M4 rifle, the CAT TSWIF provides competitive performance and allows blast diverter users to maintain BATFE non-SBR compliance as required.
In this review, the CAT TSWIF performance metrics depend upon suppressing a supersonic centerfire rifle cartridge on a commonly fielded gas-operated rifle outfitted with a blast diverter, which is an incredibly difficult task. How would the CAT TSWIF perform on your M4 with a 14.5-in barrel and pinned-and-welded blast diverter or flash suppressor?
The Engaged Industries Operator 5.56 is a full length reduced diameter 5.56mm rifle silencer possessing a secondary retention mounting system that is simple to operate. The silencer also has lower back pressure than several competing models; the suppression performance of the silencer is relatively balanced, especially for its size and weight. Notable aspects of the silencer’s performance include its consistent signature and only moderate first-round-pop. At 1.5-in diameter, and less than 16 ounces including its mount system, the Operator 5.56 performance is relatively competitive in the broad 5.56 silencer market.
In this review, the Engaged Industries Operator 5.56 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 Engaged Industries Operator 5.56 perform on your MK18 with a 10.3-in barrel?
The Combat Applications Technology CAT/RAT is a multi-unit modular silencer system intended to suppress 300 BLK personal defense weapons (PDWs). Its advanced hybrid technology, fully adaptable performance, and specialized design for the SIG SAUER MCX family of systems, makes it one of the most unique examples of high performance suppressed small arm system optimization evaluated by the PEW Science Laboratory, to date. The end user may choose to field the CAT RAT in covert operations, high volume fire training scenarios, or close quarter vehicle environments and not sacrifice weapon system reliability. The CAT RAT is capable of suppressing both subsonic and supersonic 300 BLK from the complete range of MCX and Rattler system barrel lengths, as well as from other 300 BLK systems.
In this review, the CAT RAT system performance metrics depend upon suppressing a subsonic intermediate rifle cartridge on a short barrel gas-operated rifle, which is an incredibly difficult task. How would the three CAT RAT configurations perform on your 6.75-in 300 BLK SIG SAUER MCX or Rattler AR-18 system?
The PWS BDE 22 is a lightweight rimfire silencer that exhibits extremely competitive suppression performance on short-barrel rimfire systems such as pistols. The silencer’s monocore is 3D-printed from titanium and may be cleaned with a variety of chemical solutions. Weighing approximately 4.2 ounces, the PWS BDE 22 provides users with a high performance option that may be used on a variety of systems while being unobtrusive to handling.
How would the PWS BDE 22 perform on your .22 semiautomatic pistol?
The Q Southpaw is a full-size 5.56mm rifle silencer possessing a simple and secure mounting system with construction materials that provide requisite durability for reasonable short barrel rifle use. Similar in overall design pedigree to Q’s other centerfire rifle silencers like the Trash Panda, the Southpaw marks the transition to dedicated 5.56mm bore aperture as well as stainless steel and Inconel alloy construction. As the Southpaw provides more consistent performance on 5.56 weapons than the Trash Panda, and is able to use the same type of mounting system, it offers a “plug and play” option for those users wanting to nominally improve overall suppression performance while enhancing resiliency and potentially even visual signature mitigation.
In this review, the Q Southpaw 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 Q Southpaw perform on your MK18 with a 10.3-in barrel?
The Off Grid Suppressors Scorpius is a compact and lightweight rimfire silencer that exhibits extremely competitive suppression performance on short-barrel rimfire systems such as pistols. The silencer is 3D-printed from titanium and may be cleaned with a variety of chemical solutions. At only 5 inches long, and weighing approximately 2.2 ounces, the Off Grid Scorpius demonstrates extremely competitive overall performance not only for its size, but also relative to larger rimfire silencers.
How would the Off Grid Suppressors Scorpius perform on your .22 semiautomatic pistol?
The Sylvan Arms SA223TIS is a mid-size 5.56 rifle silencer that possesses a robust mounting system and a lighter weight than some competing designs. Its conventional baffle technology provides suppression performance that competes with models using similar technologies, as expected, and exceeds the performance of some designs. For use on short barrel rifles, the titanium-tube clad SA223TIS possesses a stainless steel blast chamber and baffles, adding some resiliency. The included taper mount with ratcheting retention securely seals; a direct-thread version of the silencer is also available.
In this review, the Sylvan Arms SA223TIS 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 Sylvan Arms SA223TIS perform on your M4 with a 14.5-in barrel?
The Sylvan Arms SA30TI is a full-size multicaliber rifle silencer that possesses a robust mounting system and a lighter weight than some competing designs. Its conventional baffle technology provides suppression performance that competes with models using similar technologies, as expected, and exceeds the performance of some designs. For use on short barrel rifles, the primarily titanium SA30TI possesses a stainless steel blast chamber and blast baffle, adding some resiliency. The included taper mount with ratcheting retention securely seals; a direct-thread version of the silencer is also available.
In this review, the Sylvan Arms SA30TI performance metrics depend upon suppressing a supersonic centerfire rifle cartridge; no easy task. How would the silencer perform on your .308 deer rifle?
The Otter Creek Labs Infinity is a severe-use mid-size 30 caliber rifle silencer with an advanced but flexible hybrid design. 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 may perform well on semiautomatic platforms even in its most restrictive configuration. For sensitive platforms, the user may fully vent blast loads from multiple stages of the silencer, lowering back pressure to a minimum for this design. With subsonic 300 BLK, the Infinity is able to compete with many conventional silencers, while exhibiting some performance deficiencies in first-round-pop (FRP) control.
How would the Otter Creek Labs Infinity perform on your personal defense weapon?
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