Receiver Extension Kit, Carbine, AR15, Retail Packaged

CMMG 6-Position adjustable Mil-Spec Receiver Extension (Buffer Tube) kit includes everything needed to complete your AR's buffer system. Just add the mil-spec diameter carbine stock or brace of your choice. Made from aluminum with a matte black hard coat anodized finish.Includes:Carbine Buffer TubeReceiver End PlateCastle NutAction SpringBuffer