Tapco Ruger 10/22 B-1 Muzzle Brake Black. 920 - 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. Specifications for Tapco Ruger 10/22 B-1 Muzzle Brake: Manufacturer: Tapco Finish: Anodized Fabric/Material: Aluminum Threads per Inch: 1/2x28 Gun Make: Ruger Gun Model: Ruger 10/22 Length: 2 in Weight: 0.1 lb Tapco TAP22004 Muzzle Brake Black Anodized Aluminum 1/2"x28 Threads 2" OAL .920 What firearm models does the manufacturer say Tapco Ruger 10/22 B-1 Muzzle Brake is compatible with? The manufacturer says that Tapco Ruger 10/22 B-1 Muzzle Brake is compatible with Ruger 10/22Tapco TAP22004: Ruger 10/22 B-1 Muzzle Brake Black