Product DescriptionThe SilencerCo ASR Muzzle Brake (AC857) is a durable 3-port brake designed for .338 caliber rifles with 5/8"-24 threads. Built to work with SilencerCo ASR mounts, it provides quick, one-hand-on/one-hand-off attachment and detachment while helping reduce felt recoil and muzzle climb. A black steel construction delivers strength for demanding range, hunting, and suppressed-use setups, and each brake includes a shim set and Rocksett for straightforward installation.Product Highlights ASR-compatible muzzle brake for fast, secure mounting with SilencerCo ASR mount systems 3-port design helps reduce felt recoil and control muzzle rise for faster follow-up shots 5/8"-24 thread pitch fits common .338 caliber barrel threading Black steel construction built for rugged use on hunting and precision rifle platforms Includes shim set and Rocksett to help simplify timing and installation Specs Brand: SilencerCo Manufacturer Part Number: AC857 UPC: 817272011838 Product Type: Muzzle Brake Mount System Compatibility: SilencerCo ASR mounts Port Count: 3-Port Caliber Compatibility: .338 Cal Thread Pitch: 5/8"-24 TPI Material: Steel Color/Finish: Black Included: Shim set, Rocksett Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&&';;s manufacturer.