Rugged's dedicated 5.56mm suppressor has decreased blowback, recoil, and flash mitigation standard while weighing in at only 13.4 oz. This suppressor is an out-of-the-box solution designed specifically to tame the sound impulse at the shooter's ear of America's rifle, the AR-15/M-16. Key Features CALIBER: Full Auto Rated with no barrel length restrictions. 5.56x45mm NATO DIAMETER: 1.5? LENGTH: 6.4? WEIGHT: 13.4oz FINISH: High Temp Cerakote(R) MATERIALS: Baffles: Stellite. Tube: 17-4 Stainless Steel. Mount: 17-4 Stainless Steel Finish: High Temp Cerakote(R) (over the entire suppressor) WARRANTY: Unconditional lifetime warranty from Rugged Suppressors INCLUDES: 5.56 M2 Brake (1/2x28 Thread Pitch), 5.56 Front Cap, Razor 556 Suppressor, Operator's Manual, Razor Logo Sticker MPN: RZR556 All NFA rules apply. Please contact us if you are unsure about purchasing a suppressor.