Ready to complete your AR10/LR-308 lower receiver? The CMMG ZEROED AR10 (Mk3/.308WIN) lower parts kit is just the thing you need. All parts are made in the USA and comes in convenient color-coded packets to make assembly and part identification a breeze. This kit is designed to work with CMMG lowers (Gen 1 DPMS High-Pattern LR-308) and meet or exceed mil-spec.