Rearden Mini Square Shoulder Muzzle Brake 3/4-20, Black

Before installation, always use an alignment rod to verify proper setup of the entire system. Clean all surfaces thoroughly and ensure the muzzle device is properly torqued (15-25 ft-lb) and secured to the barrel with Rocksett. Make sure the muzzle device sits squarely against the shoulder. Note - using this system on a Q can may void your warranty - proceed with caution. When bipoding the suppressor, confirm that threads and tapers are clean, then torque it to 10 ft-lb. Double-check alignment before use. Enjoy with confidence.17-4 PH H900Compatible with Atlas and Atlas XLCompatible with Plan BThe Atlas adapter has exceeded the limit by approximately 0.05 inchesAtlas XL adapter does not experience overrunBlack nitride coating with a surface hardness of 67 HRC