Fire control group and grip NOT included.CMC Triggers Complete Lower Receiver Parts Kit for AR-15 is a great addition to your AR15 build. Suitable for amateur gun builder to seasoned expert gunsmith.Bolt CatchBolt Catch PlungerBolt Catch SpringBolt Catch Roll PinMag ReleaseMag Release ButtonMag Release SpringBuffer Retainer SpringSafetyBuffer RetainerSafety Detent SpringSafety DetentTrigger GuardTrigger Guard Roll PinTake-down Detent SpringsTake-down DetentTake-down Pins