The Kgm Suppressors SR25 Taper Muzzle Brake is crafted from heat-treated chromoly steel and features a durable OXyN gas nitride finish. Designed for versatility it enables the attachment of R30T or R338 suppressors on firearms with 3424 muzzle indexing threads. With a bore that accommodates up to .338 caliber projectiles this muzzle brake ensures both functionality and precision for a wide range of shooting applications.