The Ruger Hybrid Muzzle Brake is a genuine Ruger factory accessory made in the USA. It reduces recoil by as much as 58% (depending on caliber and barrel length) contributing to improve accuracy over a longer string of fire. Brake locks into position using an easy-to-use external jam nut. It reduces noise and blast to the sides of the shooter. It installs quickly using a 7/8" box wrench or crescent wrench. The Hybrid Muzzle Brake is manufactured from alloy steel with a matte black finish.