THIS KIT INCLUDES: Hammer Spring, Disconnector Spring, Trigger Pin x2, Trigger Spring, Safety Selector Detent, Ejector Spring, Magazine Catch Spring, Bolt Catch Spring, Bolt Catch Plunger, Bolt Catch Pin, Takedown Spring Detent x2, Takedown Spring x2, Bu€er Retainer, Bu€er Retainer Spring and Trigger Guard Pin.