ZEROED Lower Parts Kit, AR15

Finish your next AR15 lower receiver with the CMMGZEROED(TM) Mk4/AR15 lower parts kit. Every piece is made here in the USA and comes in convenient color-coded packets to make assembly a breeze. Check out our interactive install walkthrough video below or read the CMMG Resources LPK Install article for an in-depth breakdown. Don't forget a Buttstock or Brace kit to complete your pistol or rifle lower. All parts meet or exceed mil-spec. All installation hardware included.Kit Includes:ZEROED Extended Bolt Catch AR15Bolt Catch Plunger, Spring, & Roll PinZEROED Trigger Guard, Screw, & Roll PInTrigger & Trigger SpringDisconnector & Disconnector SpringHammer & Hammer SpringTrigger/Hammer Retaining PinsZEROED 60deg/90deg Adjustable Ambi Safety, Detent, & SpringZEROED Ambi Magazine Catch & SpringZEROED Extended Magazine Release ButtonHD Pivot/Takedown Pins, Detents, & SpringsZEROED Pistol Grip, Grip Screw, & WasherBuffer Retainer & Spring