Troy, Fits 556NATO 1/2X28HR AR-15, Black

The Troy Claymore Muzzle Brake(TM) directs muzzle blast and sound forward, away from the shooter, while retaining effective muzzle brake properties. This rugged muzzle brake features a very low dust signature without a swirling effect and is tough enough to serve as an improvised breaching device if the situation calls for it.
1/2X28 thread pitch
Heat treated ordnance steel construction