AR-15 Lower Receiver Completion Kit

The kit you need to complete your AR-15 Lower Receiver for your latest build!

Brownells' includes the easiest way to stock and sell genuine, mil-spec AR-15 parts, or use to assemble rifles on your receivers. Much lower in total cost than buying the parts one at a time. Kit contains only new, current-production, genuine, mil-spec parts; never pull-offs or direct-exchange surplus. Lower Receiver Parts Kit includes trigger spring, trigger pin, hammer spring, hammer pin, disconnector and spring, bolt catch, bolt catch plunger, bolt catch spring, bolt catch roll pin, selector, selector detent, selector detent spring, (2) takedown detents and springs, pivot pin, rear takedown pin, buffer retainer and spring, magazine catch, button and spring, screw and washer, triggerguard assembly, pin, hammer, trigger and pistol grip.

In addition to the lower parts kit, the Brownells' collapsible buttstock similar to the current US GI 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 buffer tube, receiver lock plate, lock nut, toe-mounted steel sling loop, carbine recoil spring and buffer. Buttstock is 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. Available with Mil-Spec (nominal 1.14" O.D.) receiver extension tube. Stock interior diameter is matched to buffer tube O.D. for a snug fit that eliminates un wanted play and rattles.