TacFire Crown Muzzle Brake .223/5.56 1/2x28 Black Small. The crown shape minimizes side blast and greatly reduces felt recoil. Its symmetrical shape allows for a predictable installation so you can be sure it fits correctly. Like our other muzzle devices a crush washer is included with the muzzle brake which should be installed with a torque wrench. The slotted design of the Crown allows the shooter to manipulate the crown without extra swaging or grinding which allows for tighter tolerances and repeatable results. Specifications for TacFire Crown Muzzle Brake: Manufacturer: TacFire Fabric/Material: Stainless Steel Country of Origin: USA Features of TacFire Crown Muzzle Brake Linear compensator 6 vent ports to aid in redirecting blast along with knurled spiral lightening flutes. Package Contents: TacFire Crown Muzzle Brake Crush Washer TacFire MZ1024: Crown Muzzle Brake .223/5.56 1/2x28 Black Small