Advanced Technology A5102240 AR-15 Mil-Spec 6-Position Buffer Tube Assembly Black Anodized Aluminum

The Advanced Technology A5102240 military buffer tube assembly package fits most AR-15 and AR variant lowers. It features a 6-position, hard-coat anodized 6061-T6 aluminum buffer tube with a mil-spec thread diameter of 1.19" and mil-spec tube diameter of 1.15". This assembly also comes with an AR-15 recoil plug, buffer spring, and a steel military Grade E-coated castle nut and locking ring, providing everything you need to mount a mil-spec adjustable buttstock on a complete lower.