Complete Lower Parts Kit with QMS Trigger. This kit comes with: Bolt Catch, Bolt Catch Plunger, Bolt Catch Spring, Bolt Catch Roll Pin, Mag Release, Mag Release Button, Mag Release Spring, Buffer Retainer Spring, Safety, Buffer Retainer, Safety Detent Spring, Safety Detent, Trigger Guard, Trigger Guard Roll Pin, Takedown Detent Springs,Takedown Detents,Takedown Pins, QMS Trigger You can get the kit with or without the grip! Mfg: Alg Defense