Product Description The TAPCO 10/22 Muzzle Break is made of lightweight aluminum and fits .920-diameter bull barrels. Designed to reduce muzzle jump, recoil, and add design to your barrel. Tapco TAP22010 Muzzle Brake Silver Anodized Aluminum 1/2"x28 Threads 2" OAL .920" Diameter 22LR at United States Association of Gun Owners $39.99 Buy Now Check Price on Amazon Check Price on eBay