Strike Industries offers replacement components for the AR-15 that are made to military specifications. Available in .223 calibers and .308, these high quality components will provide excellent fit and reliable function in your AR series rifle. They come in PRO sets which are 1 piece bulk packages. The S.I. crush washers are great for replacing your used ones and for installing a new muzzle device onto your AR.

Specifications and Features:
Steel Construction
Proper Hardness
.223 Caliber
Easy Installation
Matte Black Finish