This muzzle device will allow a shooter to utilize any of the R556, R556A1, R556A2 or R30A1 suppressors on weapons that have 1/2×28 muzzle threads. Featuring 5 ports, a taper mounting surface and a ratcheting secondary retention system, this 5-port muzzle device will ensure precise and repeatable performance from your suppressor. Constructed of heat treated Chomoly Steel with OXyN gas nitride finish.
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