CMMG ZEROED LPK MK3 W/GRIP

Description

The CMMG ZEROED Lower Parts Kit for the Mk3 platform gives builders a complete collection of internal lower components sized and spec’d for AR10/LR-308 pattern receivers, including most LR-308 type lowers beyond CMMG’s own Mk3. It is aimed at the builder who wants a single, organized purchase rather than sourcing a fire control group, safety, and hardware separately across multiple vendors.

Every part arrives sorted into color-coded packets, which meaningfully reduces the chance of losing small components or misidentifying which spring pairs with which detent during assembly. That organizational detail matters on a kit this comprehensive: contents include the full fire control group—trigger, hammer, disconnector, and all associated springs—alongside an ambidextrous safety selector with its detent and spring, bolt catch assembly, magazine catch with release button, pivot and takedown pins with their hardware, an A2-style pistol grip with grip screw and washer, and a buffer retainer and spring.

The ambidextrous safety selector is worth noting for left-handed builders or those who switch hands under certain shooting conditions—it is not a common inclusion in budget-tier kits and eliminates the need to source one separately. The A2 grip included here is a functional baseline; builders who prefer an aftermarket profile can swap it without affecting any other component in the kit. Nothing in this package locks you into a particular trigger or grip direction—both are straightforward to replace as a build evolves.

Compatible with CMMG Mk3 and most LR-308 type lower receivers. A stripped lower, stock assembly, and upper are sold separately.