This 3-port muzzle brake is compatible with all SilencerCo ASR Mounts and various thread and caliber options, allowing you to shoot suppressed for any situation. It features quick and easy one-hand-on, one-hand-off attachment and removal. The 3-port design effectively decreases felt recoil and muzzle climb. Each ASR muzzle brake includes a shim set and Rocksett for simple installation. The ASR mounting system is standard on the Omega 300, Chimera 300, Saker ASR, and Specwar families. It’s also compatible with Hybrid 46, Harvester Series, Octane Series, and Omega K Series.