New CNC machined from 6061 aluminum jam nut washer. Use our jam nut washer in place of a crush washer to easily install a muzzle brake compensator onto your device. The Jam Nut is threaded onto the barrel before the muzzle device and then is backed out to tighten against the back side of the muzzle device.You will receive 2 Jam Nut washers.

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