SureFire’s SOCOM556 SB2 Suppressor is the perfect addition to an 5.56mm SBR with a barrel 10 inches or less. The SB2 attaches to the weapon via SureFire Fast-Attach muzzle brake or flash hider, and a lightweight, highly compact design ensures any changes to the weapon’s handling or overall length are negligible. This suppressor utilizes an innovative internal design, which features a larger bore diameter to minimize the risk of baffle-strikes. This internal design also employs an internal venting system to reduce back pressure, cyclic rate and gas blowback to reduce operating temperatures considerably. In addition, the SB2 is constructed from a combination of high-temperature Inconel alloy and stainless steel, allowing the suppressor to function reliably when used with full-auto fire. Features of the SureFire SOCOM556 SB2 Suppressor: Attaches to the weapon via SureFire Fast-Attach muzzle brakes and flash hidersReduces visible muzzle flash up to 98.8% when compared to standard muzzle Eliminates first-round flash Mli>Innovative internal venting to reduce back-pressure, cyclic rate and gas blowback, significantly reducing operating temperatures SureFire SOCOM556 SB2 Gen II 5.56 Black Suppressor w/ Fast-Attach Mount SOCOM556-SB2-BK