CMMG MK3 .308 Lower Parts Kit — Black Matte

The CMMG MK3 .308 Lower Parts Kit provides the components required to assemble a lower receiver for AR-10 / MK3-style builds. The kit is packaged with color-coded bags for easy identification and includes the fire-control group, pistol grip, pins, springs, and related hardware. It is designed for use with CMMG Mk3 lowers and is compatible with most LR-308 style receivers; verify compatibility with non-CMMG receivers before installation. All included parts are specified to meet or exceed mil-spec standards.

Key Specifications

• Caliber compatibility: .308 / 7.62 NATO.
• Fit: Designed for MK3 lowers and most LR-308 type receivers.
• Finish: Black Matte.
• Includes: Pistol grip, fire controls, springs, pins.
• Platform size: AR-10.
• Series: Mil-Spec.
• Weight: 0.5813.
• Dimensions: 1.80 x 4.85 x 10.70.
• Condition: New.

This kit simplifies the lower assembly process with labeled bags and a complete set of components selected for Mk3/AR-10-style builds. Whether completing a project build or replacing worn parts, the CMMG MK3 .308 Lower Parts Kit offers a direct, mil-spec-aligned solution that supports reliable installation and consistent performance in serviceable, practical applications.