CMMG Receiver Extension Kit – Pistol
Designed specifically for use with the Sig Sauer Arm Brace. The receiver extension kit includes the knurled receiver extension, carbine buffer, carbine spring, and ambidextrous end plate! The buffer included with this kit is a standard weight buffer at 3 oz. Works with the AR-15 Platform. Tight adjustment onto the receiver extension eliminates the need for the castellated nut. Length when installed is 6.5 inches. Comes included with an ambidextrous end plate that provides multiple attachment points for slings.