Armalite ar15 lower receiver parts kit.223 cal /5.56mm FEATURES:-Includes: ejector/safety spring, pistol grip screw, pistol grip washer, safety detent spring x2, detent x2, M-15 takedown pin, M-15 pivot pin, buffer detent, buffer detent spring, bolt stop pin, M-15 bolt stop catch, bolt stop plunger, bolt stop spring, M-15 magazine catch, magazine catch button, magazine catch spring, safety selector, trigger guard assembly, trigger guard pin, precision box w/ brass hinge OD Green Other Features: Includes: everything necessary to completely build up lower no trigger