Brownells AR-15 Collapsible Commercial Buttstock Assembly Black

Collapsible buttstock similar to the current USGI M4 carbine stock provides convenient six-position length-of-pull adjustment to fit different-size shooters, including those wearing body armor. Ready to install on any standard AR-15 rifle or carbine lower receiver; includes 1.17'''' diameter commercial buffer tube, receiver lock plate, lock nut, toe-mounted steel sling loop, carbine recoil spring and buffer. Convert a fixed-stock, flattop rifle to M4 carbine configuration without permanent alterations to gun. Buttstock made from extremely tough, fiberglass-reinforced, injection-molded nylon that resists impact, heat, moisture, extreme cold, and most cleaning solvents. Stock interior diameter is Mfg: Brownells SPECS: Aluminum and fiberglass-reinforced, injection-molded nylon, matte black. 8 3/4" (22.2cm) OAL collapsed; 11 3/4" (29.9cm) OAL fully extended.