Combine this CMMG Receiver Extension Buffer Tube Assembly with your choice of lower parts kit and butt stock to complete your new lower group. The CMMG Receiver Extension attaches to any firearm that accepts a Mil-Spec receiver extension (buffer tube).
- CMMG 6 Pos Receiver Extension
- Carbine Buffer Assembly
- Carbine Action Spring
- Mil-Spec Diameter
- Hard Coat Anodized Finish