CMMG Mk3 ZEROED Lower Parts Kit AR10/LR-308. The CMMG ZEROED AR10 (Mk3/.308WIN) lower parts kit is just the thing you need. All parts are made in specialized factories and comes in convenient color-coded packets to make assembly and part identification a breeze. Check out our interactive install walkthrough video below or read the CMMG Resources LPK Install article for an in-depth breakdown. Dont forget a Buttstock or Brace kit to complete your pistol or rifle lower. Not all .308 lowers are the same. Their kit is designed to work with our lowers (Gen 1 DPMS High-Pattern LR-308) and meet or exceed mil-spec. They would recommend checking with the manufacturer of your lower for compatibility of parts if you are not using our receiver. Specifications for CMMG Mk3 AR10/LR-308 ZEROED Lower Parts Kit: Manufacturer: CMMG Color: Black Caliber: .308 Winchester Gun Make: CMMG AR Platform Gun Model: CMMG Mk3 AR-10 Gun Type: Rifle Condition: New Package Contents: CMMG Mk3 AR10/LR-308 ZEROED Lower Parts Kit ZEROED Extended Bolt Catch Mk3 Bolt Catch Plunger Spring & Screw Pin Trigger & Trigger Spring Disconnector & Disconnector Spring Hammer & Hammer Spring Trigger/Hammer Retaining Pins ZEROED 60/90 Adjustable Ambi Safety Detent & Spring ZEROED Ambi Magazine Catch & Spring ZEROED Extended Magazine Release Button Mk3 HD Pivot/Takedown Pins Detents & Springs ZEROED Pistol Grip Grip Screw & Washer Buffer Retainer & Spring CMMG 38CA62B: Mk3 ZEROED Lower Parts Kit AR10/LR-308