CMMG Mk3 Lower Parts Kit, .308 / 7.62 NATO

The CMMG Mk3 Lower Parts Kit supplies the majority of lower-receiver components needed for building or repairing an AR-10/.308 lower. It is designed for use with CMMG Mk3 lowers and is compatible with most LR-308 type lowers. The kit is supplied in a black matte finish and is intended for customers assembling a functional lower receiver while retaining the option to install upgraded controls and grips.

Key Specifications

• The kit is specified for caliber .308 / 7.62 NATO.
• Compatibility is listed as CMMG Mk3 lowers and most LR-308 type lowers.
• The package omits the Fire Control Group and pistol grip.
• The listed finish style is BLACK MATTE.
• The material is described as Various.
• The product type is Parts Kit.
• The kit's listed dimensions are 0.90 x 3.95 x 7.50.
• The listed weight is 0.225 (as provided).
• All included components are stated to meet or exceed mil-spec.

This Mk3 Lower Parts Kit is a practical option for builders and armorers assembling AR-10/.308 lowers who want a mil-spec starting set of lower components while retaining flexibility for aftermarket fire-control and grip choices. Its compatibility with CMMG Mk3 receivers and common LR-308 pattern lowers makes it suitable for custom builds, repairs, and parts consolidation in a professional or hobbyist workshop setting.