GrovTec GTHM319 Crush Washer 223 1/2x28 Black Nitride 5-Pack

The GrovTec GTHM319 Crush Washer is a precision steel shim engineered to be installed at the muzzle of your rifle to properly index and lock down compatible muzzle devices. Designed for 223 Remington rifles, this washer carries the standard 1/2"-28 thread pitch used on most AR-pattern barrels, making it a direct fit for common flash hiders, compensators, and muzzle brakes in that thread spec.

Each washer is machined from high quality steel and coated with a premium black nitride finish for excellent corrosion resistance and a long service life under repeated installs and removal. Crush washers deform under torque to create a reliable, gas-tight seat between the muzzle device and the barrel shoulder, helping to keep your muzzle accessory properly aligned and indexed shot after shot.

This listing is for a 5-pack of GTHM319 crush washers, giving you multiple replacements on hand for future builds, caliber swaps, or as spares in your gunsmithing and armorer's kit.