CMMG ZEROED Lower Parts Kit Mk3 AR-10 .308 Win

The CMMG ZEROED Lower Parts Kit for the Mk3 provides every small component needed to finish an AR-10 / LR-308 pattern lower receiver. Made in the USA and organized in convenient color-coded packets, the kit is designed to take the guesswork out of a big-bore AR build.

Built for the .308 Winchester / 7.62x51mm NATO platform, the ZEROED Mk3 LPK fits CMMG Mk3 lowers and most LR-308 / Gen 1 DPMS-pattern lower receivers. The kit includes an ambidextrous safety selector, fire control group, trigger guard, and pistol grip, plus the full set of small parts - pins, springs, buffer retainer, bolt catch, magazine catch, and the remaining hardware - to bring your lower to life.

Whether you are assembling a hunting rifle, a long-range precision build, or a defensive .308 AR, the CMMG ZEROED Mk3 Lower Parts Kit delivers factory-spec components ready to drop in and go.