•Includes the necessary parts to build a complete lower receiver except for the receiver extension & buttstock •Parts included are: Takedown Pin, Receiver Pivot Pin, Takedown Pin Detent (2), Takedown Pin Detent Spring (2), Bolt Catch, Bolt Catch Plunger, Bolt Catch Spring & Spring Pin, Buffer Retainer & Buffer Reatiner Spring, Hammer & Trigger Pin (2), Hammer Spring, Trigger Spring, Disconnect, Disconnect Spring, Magazine Catch & Spring, Magazine Release Button, Trigger Guard Assembly, Trigger Guard Pivot Spring Pin, Safety Selector, Selector Detent, Selector Detent Spring, Lock Washer, Pistol Grip Screw, Hammer, Trigger & Pistol Grip