Ar-15/M16 Marked Ejection Port Covers - Ar15/M16 Ejection Port Cover 5.56 Nato

These Wilson Combat AR-15 Ejection Port Covers give you the ability to quickly identify upper receivers of various calibers. Finished in Black Armor-TuffA(R), the covers feature the caliber of your choice. Replaces your existing ejection port cover. Includes the ejection port cover only, no pin, c-clip or spring. Mfg: Wilson Combat