American Built Arms AR-15 Lower Receiver Parts Kit

The American Built Arms AR-15 Lower Receiver Parts Kit is comprised of genuine, Mil-spec, high quality parts for those AR-15/M-16 lower parts that wear down, break, or simply get lost. With this builders kit on hand, you'll always have the lower parts you need to keep your rifle running smoothly. These high-quality lower parts are manufactured to precise tolerances to ensure a correct fit with your 5.56 AR-15/M16 rifle.