Ar-15 Crush Washer 1/2

The AR-15 Crush Washer 1/2 from Sons of Liberty Gun Works is an essential muzzle device component for AR-15 builders and gunsmiths who demand precision alignment and repeatability. This crush washer serves a critical function in the assembly of 1/2x28 threaded muzzle devices, ensuring that compensators, muzzle brakes, and suppressors are indexed at the correct rotational position relative to the barrel's gas port.

Crush washers function by deforming under torque to lock muzzle devices in place while providing consistent headspace and rotational indexing without relying on set screws or cross-pins. The 1/2x28 configuration is the standard thread pitch for most direct-impingement AR-15 platforms in 5.56 NATO and .223 Remington, making this washer universally compatible across the vast majority of modern AR builds.

Sons of Liberty Gun Works manufactures this component to tight tolerances, ensuring repeatable crush characteristics that prevent device rotation, which can shift zero and degrade accuracy during extended fire. Installation requires only hand-tightness plus a quarter turn to fully compress the washer, making assembly straightforward for experienced builders and gunsmiths alike. Law enforcement armors, tactical trainers, and competitive shooters benefit most from this component.