Aim Sports ACWA1 Crush Washer 223 Rem/5.56x45mm NATO AR-15 Steel 12-Pack

The Aim Sports ACWA1 Crush Washer is a steel crush washer designed for 223 Remington and 5.56x45mm NATO AR-15 platforms. These washers fit most AR-15 barrel profiles and ensure proper indexing of flash hiders and muzzle brakes during installation.

Each washer is manufactured from durable steel with a black finish and sits between the barrel shoulder and the muzzle device to create the correct shim gap for proper alignment under torque. Crush washers deform under the clamping force of the muzzle device nut, locking the device in place at the correct clocking so the port slots or prong orientation lines up where intended.

Sold as a 12-pack, the ACWA1 is an essential install component for any AR-15 builder who wants flash hiders and muzzle brakes indexed correctly. The bulk packaging keeps spares on hand for multiple builds or for routine replacement during muzzle device removal and re-installation.