For your next custom AR-15, M16, M4 build. The Wilson Combat Carbine receiver extension machined from 7075-T6 aluminum and manufactured to Mil-Spec dimensions and specifications. Hard Coat Anodized per Mil-A-8625F, Type III, Class 2. These tubes should be used with stocks such as USGI, BCM, Colt, LMT, SOPMOD, VLTOR, Stag Arms, Magpul CTR (Mil-spec), and others that a made to the Mil-Spec size. The Super-Stoc Kit Includes: Receiver Extension Receiver End Plate Receiver Castle Nut Standard Carbine Buffer Carbine Buffer Spring For AR-15's only. Mfg: Wilson Combat
