CMMG AR-15 Carbine Receiver Extension Kit

The CMMG AR15 Carbine Receiver Extension Kit includes a CMMG 6-position receiver extension, carbine buffer assembly, and a carbine action spring. Use the AR15 Carbine Receiver Extension Kit with your choice of lower parts kit and butt stock to complete a lower group. Manufacturer model #: 55CA6C7. 6-position receiver extension Carbine buffer assembly Carbine action spring

Brand: CMMG