Colt AR-15 Small Pin Lower Receiver Parts Kit

This is Colt's own lower receiver parts kit for semi auto AR-15 and M4 style rifles in 223/5.56. It holds the small parts needed to finish a stripped lower, and because every piece comes from one maker, the parts are made to work together with minimal fitting.

The kit includes the trigger, hammer, disconnector and pistol grip along with the rest of the lower small parts. It fits small pin mil-spec AR-15 style lower receivers. The receiver itself is not included.