SSS.6.189 - Q Southpaw and the MK18 5.56x45mm Short Barrel Automatic AR15 Rifle (Free Version)

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SSS.6.189 - Q Southpaw and the MK18 5.56x45mm Short Barrel Automatic AR15 Rifle (Free Version)

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?

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SSS.6.188 - Off Grid Suppressors Scorpius and the Beretta 21A (Free Version)

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SSS.6.188 - Off Grid Suppressors Scorpius and the Beretta 21A (Free Version)

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?

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SSS.6.187 - Sylvan Arms SA223TIS and the M4A1 Mid-Gas 5.56x45mm 14.5-in Barrel Automatic AR15 Rifle (Free Version)

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SSS.6.187 - Sylvan Arms SA223TIS and the M4A1 Mid-Gas 5.56x45mm 14.5-in Barrel Automatic AR15 Rifle (Free Version)

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?

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SSS.6.186 - Sylvan Arms SA30TI and the Savage Model 10 PC .308 (Free Version)

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SSS.6.186 - Sylvan Arms SA30TI and the Savage Model 10 PC .308 (Free Version)

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?

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SSS.6.185 - Otter Creek Labs Infinity and the Q mini FIX 300 BLK Subsonic (Free Version)

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SSS.6.185 - Otter Creek Labs Infinity and the Q mini FIX 300 BLK Subsonic (Free Version)

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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SSS.6.184 - Research Supplement: The Quietest 9mm Silencers - MP5 Silencer Detailed Loudness and Tone Comparisons (Article Preview)

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SSS.6.184 - Research Supplement: The Quietest 9mm Silencers - MP5 Silencer Detailed Loudness and Tone Comparisons (Article Preview)

Eight silencer configurations 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 due to their use on the HK MP5 submachine gun, and other pistol caliber carbine (PCC) platforms. The eight silencers behave differently, even despite some of them exhibiting similar performance quantified by the PEW Science Suppression Rating. Their 9mm MP5 suppression performance provides an excellent case study comparing current 9mm MP5 silencer technology.

Typically, silencers possessing a high flow rate also possess lower sound suppression performance with subsonic ammunition and potentially lower bystander suppression performance, in general. Also typically, silencers possessing a lower flow rate (higher back pressure) can reduce the level of operator protection by increasing ejection port blast. There are exceptions to these observations, and hybrid designs have the potential to exhibit high suppression performance in multiple combustion regimes while also reducing back pressure.

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 analytical test reports and to help frame objective loudness comparisons between eight 9mm suppressors that use various technologies to suppress 9mm weapon 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.6.183 - BOE Mod 1 and the M4A1 Mid-Gas 5.56x45mm 14.5-in Barrel Automatic AR15 Rifle (Free Version)

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SSS.6.183 - BOE Mod 1 and the M4A1 Mid-Gas 5.56x45mm 14.5-in Barrel Automatic AR15 Rifle (Free Version)

The BOE Mod 1 is a full size multi-core rifle silencer. With its 5.56 core and solid end cap, the Mod 1 exhibits significant overall signature suppression performance, and its back pressure may be reduced with the use of a vented end cap. The outer tube of the BOE Mod 1 system is titanium, and the user may choose silencer cores of both different caliber and different material (Inconel or titanium). The 3D-printed cores are "swappable” by the user, from the manufacturer. Material choice, end cap choice, and core bore size choice will dictate user experience in blast overpressure suppression, depending on weapon system selection. The silencer’s core geometry provides a significant amount of surface area, which is one of factors producing its high muzzle suppression performance.

In this review, the BOE Mod 1 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 BOE Mod 1 perform on your M4 with a 14.5-in barrel?

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SSS.6.182 - Dead Air Wolfman and the Heckler and Koch SP5 9x19mm Subgun (Free Version)

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SSS.6.182 - Dead Air Wolfman and the Heckler and Koch SP5 9x19mm Subgun (Free Version)

The Dead Air Wolfman is a modular submachine gun silencer possessing mounting flexibility and durability metrics that provide a high degree of versatility.  In addition to sub-caliber use, the silencer may be used with rifle cartridges such as 5.56 NATO. The silencer is constructed of fully-welded stainless steel baffles and may be adapted to both long and short configurations.  Further utility is provided through the use of an optional wipe, which may increase gross suppression performance at the cost of decreased precision and increased back pressure.  The pure suppression performance of the Dead Air Wolfman is high and consistent with its traditional design.  System operators may be subjected to elevated hazard, relative to some competing models, due to its back pressure.

In this review, the Dead Air Wolfman performance metrics depend upon suppressing a subsonic centerfire pistol cartridge on a roller-delayed blowback submachinegun. How would the Dead Air Wolfman in both its long and short configuration perform on your 9mm pistol caliber carbine (PCC)?

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SSS.6.181 - Echo Zulu Defense X1R556-Ti and the M4A1 Mid-Gas 5.56x45mm 14.5-in Barrel Automatic AR15 Rifle (Free Version)

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SSS.6.181 - Echo Zulu Defense X1R556-Ti and the M4A1 Mid-Gas 5.56x45mm 14.5-in Barrel Automatic AR15 Rifle (Free Version)

The Echo Zulu Defense X1R556-Ti is a full size and lightweight 5.56mm rifle silencer that exhibits significant overall signature suppression performance with moderate back pressure reduction. Constructed entirely of 3D-printed titanium alloy, the HUB-mountable X1R556-Ti weighs only 11.1 ounces without a mount, which can enhance the ease of weapon handling. While the FRP control of the silencer is somewhat lacking, the overall signature reduction is high. The multi-stage hybrid ReFlow Technology in the silencer does show efficacy for reducing back pressure without compromising suppression performance, and is particularly well-suited to bolt-action rifle use.

In this review, the Echo Zulu Defense X1R556-Ti 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 Echo Zulu Defense X1R556-Ti perform on your M4 with a 14.5-in barrel?

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SSS.6.180 - Centurion Arms Maximus-L and the MK18 5.56x45mm Short Barrel Automatic AR15 Rifle (Free Version)

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SSS.6.180 - Centurion Arms Maximus-L and the MK18 5.56x45mm Short Barrel Automatic AR15 Rifle (Free Version)

The Centurion Arms Maximus-L is a full size 5.56mm machine gun rated rifle silencer that exhibits high signature suppression performance and back pressure reduction in a lightweight envelope. Constructed entirely of 3D-printed Inconel alloy, the HUB-mountable Maximus-L also exhibits significant durability to compliment its high degree of both bystander and operator hazard reduction on the standard MK18 weapon system. As a hybrid design with high flow rate, the silencer allows for high performance in a variety of environments.

In this review, the Centurion Arms Maximus-L 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 Centurion Arms Maximus-L perform on your MK18 with a 10.3-in barrel?

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SSS.6.179 - Otter Creek Labs Infinity and the MK18 5.56x45mm Short Barrel Automatic AR15 Rifle (Free Version)

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SSS.6.179 - Otter Creek Labs Infinity and the MK18 5.56x45mm Short Barrel Automatic AR15 Rifle (Free Version)

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.

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 perform on your MK18 with a 10.3-in barrel, with three of its different end caps?

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SSS.6.178 - Otter Creek Labs Infinity and the Savage Model 10 PC .308 (Free Version)

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SSS.6.178 - Otter Creek Labs Infinity and the Savage Model 10 PC .308 (Free Version)

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.  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; no easy task. How would the silencer perform on your .308 deer rifle, with both solid and vented end caps?

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SSS.6.177 - Dead Air Mojave 9 and the HK P30L (Free Version)

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SSS.6.177 - Dead Air Mojave 9 and the HK P30L (Free Version)

The Dead Air Mojave 9 is a modern lightweight and high performance modular centerfire pistol silencer intended for multiple uses. The versatility of its two length configurations and mount adaptability is notable. Perhaps even more notable is the high performance of its 3D-printed Triskelion baffle technology, which provides very high free field hazard reduction for both bystanders and the weapon operator in the long configuration; its high early-time flow rate is a significant performance factor. Classified as a hybrid design in the PEW Science research taxonomy, the specific implementation of the Triskelion geometry in the Dead Air Mojave 9 represents one of the highest performance examples of centerfire combat handgun suppression technology in recent history.

In this review, the Dead Air Mojave 9 performance metrics depend upon suppressing a full-size handgun firing a full-power subsonic centerfire pistol cartridge. How would the Dead Air Mojave 9 silencer perform on your self-defense handgun, in both long and short configurations?

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SSS.6.176 - PTR VENT Spiritus 556i and the M4A1 Mid-Gas 5.56x45mm 14.5-in Barrel Automatic AR15 Rifle (Free Version)

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SSS.6.176 - PTR VENT Spiritus 556i and the M4A1 Mid-Gas 5.56x45mm 14.5-in Barrel Automatic AR15 Rifle (Free Version)

The PTR VENT Spiritus 556i is a full size 5.56mm machine gun rated rifle silencer that exhibits highly advanced signature suppression performance and back pressure reduction.  Constructed entirely of 3D-printed Inconel alloy, the HUB-mountable VENT Spiritus 556i also exhibits some of the most significant operator hazard reduction on the standard short-barrel MK18 weapon system of any silencer evaluated by PEW Science to date.  When used on the popular 14.5-in barrel M4A1RIII mid-gas rifle, its muzzle suppression performance is class-leading.  In combination with minimal FRP and strong distal blast momentum control, the Purposely Induced Porosity (PIP) technology in the silencer allows for high performance in a variety of environments with notable potential to continue to advance performance thresholds in the suppressed small arms state of practice.

In this review, the PTR VENT Spiritus 556i 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 PTR VENT Spiritus 556i perform on your M4 with a 14.5-in barrel?

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SSS.6.175- PTR VENT Spiritus 556i and the MK18 5.56x45mm Short Barrel Automatic AR15 Rifle (Free Version)

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SSS.6.175- PTR VENT Spiritus 556i and the MK18 5.56x45mm Short Barrel Automatic AR15 Rifle (Free Version)

The PTR VENT Spiritus 556i is a full size 5.56mm machine gun rated rifle silencer that exhibits highly advanced signature suppression performance and back pressure reduction.  Constructed entirely of 3D-printed Inconel alloy, the HUB-mountable VENT Spiritus 556i also exhibits some of the most significant operator hazard reduction on the standard MK18 weapon system of any silencer evaluated by PEW Science to date.  In combination with minimal FRP and strong distal blast momentum control, the Purposely Induced Porosity (PIP) technology in the silencer allows for high performance in a variety of environments with notable potential to continue to advance performance thresholds in the suppressed small arms state of practice.

In this review, the PTR VENT Spiritus 556i 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 PTR VENT Spiritus 556i perform on your MK18 with a 10.3-in barrel?

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SSS.6.174 - B&T Station SIX 9 with B&T SIX 9 Wiped and Training Silencers (Free Version)

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SSS.6.174 - B&T Station SIX 9 with B&T SIX 9 Wiped and Training Silencers (Free Version)

The B&T Station SIX 9 is a bolt-action pistol that includes a wiped silencer.  The overall package is compact, may be used discretely in both spent casing ejection and overall signature, and modified to break-down to a very compact configuration through grip modification.  The U.S. version of the pistol has a non-ported barrel that is threaded 1/2”-28tpi and may be used with direct-thread silencers of users’ choosing.  While the gross sound suppression performance of the included wiped SIX 9 silencer is not extremely high, it does significantly suppress the system when compared to an unsuppressed gunshot, particularly for its size.  As the silencer wipes are consumable parts, B&T also offers a separate Training silencer of identical dimensions.  The performance of the SIX 9 Training silencer is somewhat similar to that of the wiped SIX 9 silencer, though lower.

In this review, the B&T Station SIX 9 wiped and Training silencer performance metrics depend upon suppressing a bolt-action handgun firing a full-power subsonic centerfire pistol cartridge. How would the B&T Station SIX 9 silencers perform during your operation and training?

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SSS.6.173- LMT AT ION LT and the MK18 5.56x45mm Short Barrel Automatic AR15 Rifle (Free Version)

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SSS.6.173- LMT AT ION LT and the MK18 5.56x45mm Short Barrel Automatic AR15 Rifle (Free Version)

The LMT AT ION LT is a full size 30 caliber rifle silencer that uses hybrid design in both its signature suppression technology, as well as in its material makeup.  Utilizing both Inconel and titanium alloys, the ION LT provides significant durability in a lighter weight envelope than silencers of similar size.  The backpressure reduction with the ION LT is significant; it reduces the propensity for blowback on semiautomatic weapons and reduces the severity of ejection port blast to the weapon operator, thus increasing operator level of protection, reducing hazard.  The end cap is removable; the 556 flash hiding end cap is highly recommended for use on 556 weapons.  The ION LT is also HUB-mount capable; the included mount system is Xeno muzzle device compatible.

In this review, the LMT AT ION LT 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 LMT AT ION LT perform on your MK18 with a 10.3-in barrel?

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SSS.6.172 - Rugged Obsidian 9 and the HK P30L (Free Version)

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SSS.6.172 - Rugged Obsidian 9 and the HK P30L (Free Version)

The Rugged Obsidian 9 is a high performance modular centerfire pistol silencer intended for multiple uses.  The silencer is versatile as it may be used in two configurations (long and short). In its long configuration, its gross suppression performance is very high, though it does have relatively high back pressure.  When the distal section is removed to create the short configuration, the signature suppression performance drops significantly, resulting in more acute hazard to both the operator and bystanders.  Nonetheless, the short configuration of the silencer does offer significant hazard reduction over that of an unsuppressed combat handgun. The Obsidian 9 represents a popular, common example of traditional technology optimized to the limits of its efficacy.

In this review, the Rugged Obsidian 9 performance metrics depend upon suppressing a full-size handgun firing a full-power subsonic centerfire pistol cartridge. How would the Rugged Obsidian 9 silencer perform on your self-defense handgun, in both long and short configurations?

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SSS.6.171 - Liberty Precision Machine Anthem-S2 QD and the Q mini FIX 300 BLK Subsonic (Free Version)

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SSS.6.171 - Liberty Precision Machine Anthem-S2 QD and the Q mini FIX 300 BLK Subsonic (Free Version)

The Liberty Precision Machine Anthem-S2 QD is a mid-size 30 caliber rifle silencer that demonstrates extremely high suppression performance for its length. For a traditionally-manufactured system, the performance of the Anthem-S2 QD is an example of the upper echelon of staged design efficiency and consistency.  The technology in the steel Anthem-S2 QD is also implemented in the titanium Mach series; the Anthem 2 series may be considered identical to the Mach series, other than construction material and included mount(s).  Both Anthem 2 and Mach series silencers possesses user-adaptable mounting systems.

How would the Liberty Precision Machine Anthem-S2 QD perform on your personal defense weapon?

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SSS.6.170 - Liberty Precision Machine Anthem-S2 QD and the Savage Model 10 PC .308 (Free Version)

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SSS.6.170 - Liberty Precision Machine Anthem-S2 QD and the Savage Model 10 PC .308 (Free Version)

The Liberty Precision Machine Anthem-S2 QD is a mid-size 30 caliber rifle silencer that demonstrates extremely high suppression performance for its length. For a traditionally-manufactured system, the performance of the Anthem-S2 QD is an example of the upper echelon of staged design efficiency and consistency, applied to a mid-size system.  The technology in the steel Anthem-S2 QD is also implemented in the titanium Mach series; the Anthem 2 series may be considered identical to the Mach series, other than construction material and included mount(s).  Both Anthem 2 and Mach series silencers possesses user-adaptable mounting capability.

In this review, the Liberty Precision Machine Anthem-S2 QD 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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