Dead Air Armament Muzzle Device Shim Kit M18x1, Black - DA004

The Dead Air DA004 Shim Kit is a set of three different steel shim thicknesses designed for muzzle devices with 1/2-28 or 5/8-24 threaded barrels. Shims are used to properly time suppressors and other muzzle devices on the barrel. Installation requires stacking shims on the barrel with the thickest shim placed first before threading on the muzzle device.