This 3-port muzzle brake is compatible with all SilencerCo ASR Mounts Â— and with multiple thread and caliber options" you can shoot suppressed for any demand. It offers quick and easy one-hand-on" one-hand-off attachment and detachment. The 3-port design effectively reduces felt recoil and muzzle climb. Each ASR muzzle brake comes with a shim set and rocksett for easy application.

Features:
Three port design
Comes standard with many platforms
Includes shim set