ATI Shark Brake Black Oxide Steel for .223/5.56 AR15 is a precision-engineered muzzle brake designed for superior performance. CNC machined from a solid block of steel it features side and top ports to efficiently reduce back pressure and muzzle rise. The sleek black oxide finish enhances durability and adds a modern edge to your firearm. Designed with a 1/2"-28 thread pattern it comes complete with a crush washer for easy installation. Perfect for .223/5.56 AR15 setups the Shark Muzzle Brake combines functionality with rugged dependability to improve your shooting experience.