Troy's claymore muzzle brake 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.Finish: BlackType: Muzzle BrakeModel: ClaymoreDimensions: 2.25"Size: 223 Remington/5.56 NATOMaterial: SteelThread Pattern: 1/2"-28 tpi