Six-position 7075 aluminum carbine receiver extension with mil-spec stock dimensions and four finish choices.

CMC's six-position carbine receiver extension is made from 7075 aluminum with Type III Class II hard-coat anodizing. Its outside diameter fits mil-spec collapsible stocks, and its internal length takes standard carbine buffers and springs.
Add the CMC AR-15 6-Position Carbine Buffer Tube to your build and see how it enhances your platform.