Aero Precision MOE Lower Parts Kit, For AR15, Includes Magpul MOE Grip in Black, Magpul MOE Trigger Guard in Black, Takedown Pin, Pivot Pin, Takedown/Pivot Detent, Takedown/Pivot Spring, Bolt Catch, Bolt Catch Buffer, Bolt Catch Roll Pin, Bolt Catch Spring, Magazine Catch Body, Magazine Catch Button, Magazine Catch Spring, Buffer Retainer, Buffer Retainer Spring, Safety Selector, Safety Selector Spring, Safety Selector Detent, 4-40 Set Screw, Trigger, Hammer, Trigger Spring, Trigger/Hammer Pins, Hammer Spring, Disconnector, and Disconnector Spring APRH100964