CMMG 55CA6C7 AR15 Carbine Receiver Extension Kit

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 Tube
• Receiver End Plate
• Castle Nut
• Action Spring
• Buffer