AR 15 M4 STOCK ASSEMBLY MIL-SPEC
Collapsible butt stock US GI M4 carbine style stock. Six-position length-of-pull adjustment. Ready to install on any standard AR-15 rifle or carbine lower receiver; includes buffer tube, receiver lock plate, lock nut, toe-mounted steel sling loop, carbine recoil spring and buffer. Butt stock made from extremely tough, fiberglass-reinforced, injection-molded nylon to resist impact, heat, moisture, extreme cold, and most cleaning solvents. Steel lock nut has four square notches and pre-cut detents for staking to lock plate.