Name: CMMG AR-10 ZEROED Lower Parts Kit, Mk3 - Ghost Guns
SKU: CMMG-AR-10-LPK
Price: 109.99 USD
Availability: InStock

CMMG AR-10 ZEROED Lower Parts Kit, Mk3 Overview

Ready to complete your AR-10 or LR-308 lower receiver? The CMMG AR-10 ZEROED Lower Parts Kit, Mk3 delivers everything you need to finish your .308 WIN build with premium, USA-made components. This complete lower parts kit is designed to work with CMMG Mk3 lowers and most Gen 1 DPMS High-Pattern LR-308 receivers, giving you the confidence that every part meets or exceeds mil-spec standards.

What sets the CMMG AR-10 ZEROED Lower Parts Kit, Mk3 apart is the upgraded ZEROED components included throughout. You get the adjustable 60°/90° ambidextrous safety selector, extended bolt catch with oversized paddles, ambi magazine catch, and extended magazine release button. The HD pivot and takedown pins feature a slightly longer design with divoted ends for easy tool-free disassembly. All components come organized in color-coded packets for quick identification and frustration-free assembly.

The CMMG AR-10 ZEROED Lower Parts Kit, Mk3 includes your complete fire control group (trigger, hammer, disconnector with springs), all necessary pins, springs, detents, and a ZEROED pistol grip with hardware. Whether you’re building a .308 rifle or AR-10 pistol platform, this kit provides a solid foundation. Just add a buttstock or brace kit to complete your lower group.

What’s Included in the CMMG AR-10 ZEROED Lower Parts Kit, Mk3

ZEROED Extended Bolt Catch Assembly
The CMMG ZEROED extended bolt catch features dual oversized extended paddles with a tactile machined surface for confident operation. Steel construction with a durable finish ensures years of reliable use. Kit includes bolt catch, plunger, spring, and screw pin.

Fire Control Group
A complete single-stage fire control group with trigger, trigger spring, hammer, hammer spring, disconnector, disconnector spring, and trigger/hammer retaining pins. All components are manufactured to meet or exceed military specifications.

ZEROED 60°/90° Adjustable Ambi Safety Selector
This ambidextrous safety selector features a reversible barrel that allows for either standard 90° or short throw 60° travel. Stylized lever serrations provide confident operation and a striking design. Includes detent and spring.

ZEROED Ambi Magazine Catch System
The CMMG ZEROED ambi extended mag catch brings ambidextrous operation along with an extended-release bar that gives shooters more leverage for faster reloads. Kit includes the ambi magazine catch, spring, and ZEROED extended magazine release button.

Mk3 HD Pivot and Takedown Pins
These improved pins are slightly longer than standard to make takedown faster and easier. The ends feature a divot that allows for the use of a bullet tip without the fear of slipping. Includes both pins with detents and springs.

ZEROED Pistol Grip and Buffer Components
A ZEROED pistol grip with grip screw and washer provides a solid interface for control. Buffer retainer and spring round out the kit to complete your Mk3 lower receiver build.

CMMG AR-10 ZEROED Lower Parts Kit, Mk3 FAQ

Is the CMMG AR-10 ZEROED Lower Parts Kit, Mk3 a complete LPK?

Yes. The CMMG AR-10 ZEROED Lower Parts Kit, Mk3 is a complete lower parts kit that includes everything needed to finish a stripped lower receiver: fire control group, safety selector, bolt catch, magazine catch and release, pivot/takedown pins, pistol grip, and buffer retainer with all associated pins, springs, and detents. You will still need a buttstock or pistol brace kit to complete the lower group.

What lower receivers are compatible with the CMMG AR-10 ZEROED Lower Parts Kit, Mk3?

This kit is designed to work with CMMG Mk3 lowers and most Gen 1 DPMS High-Pattern LR-308 type receivers. Not all .308 lowers share the same specifications. If you are not using a CMMG receiver, check with your lower manufacturer to confirm parts compatibility before ordering.

Will the CMMG AR-10 ZEROED Lower Parts Kit, Mk3 work with AR-15 lowers?

No. The CMMG AR-10 ZEROED Lower Parts Kit, Mk3 is specifically designed for the larger Mk3/.308 WIN platform based on the DPMS LR-308 pattern. AR-15 lowers require a different lower parts kit with AR-15 specific components.

What makes the ZEROED components different from standard LPK parts?

The ZEROED line features enhanced ergonomics and functionality. The extended bolt catch has dual oversized paddles for easier operation. The safety selector offers adjustable 60° or 90° throw with ambidextrous levers. The magazine catch is ambidextrous with an extended release bar for more leverage. The HD pivot/takedown pins are slightly longer with divoted ends for tool-free removal.

Does the CMMG AR-10 ZEROED Lower Parts Kit, Mk3 include a trigger guard?

No. The standard CMMG AR-10 ZEROED Lower Parts Kit, Mk3 does not include a trigger guard. Most lower receivers come with an integrated trigger guard or you can add one separately based on your preference.

Is the CMMG AR-10 ZEROED Lower Parts Kit, Mk3 compatible with FAL magazine lowers?

No. The Mk3 platform is designed for lowers that accept LR-308/SR-25 pattern magazines. Lowers designed for FAL magazines are not compatible with this kit.

Are the parts in the CMMG AR-10 ZEROED Lower Parts Kit, Mk3 made in the USA?

Yes. All parts in the CMMG AR-10 ZEROED Lower Parts Kit, Mk3 are manufactured in the USA and come with CMMG’s Lifetime Quality Guarantee against material and workmanship defects.

Can I use an aftermarket trigger with the CMMG AR-10 ZEROED Lower Parts Kit, Mk3?

If you plan to install an aftermarket drop-in trigger, consider the CMMG Gunbuilder’s Kit instead, which excludes the fire control group and pistol grip. This allows you to use your preferred trigger and grip without paying for components you won’t use.

Compatibility

Designed for CMMG Mk3 lowers and Gen 1 DPMS High-Pattern LR-308 receivers. Compatible with lowers accepting LR-308/SR-25 pattern magazines. Verify compatibility with your lower manufacturer if not using a CMMG receiver.

Not Compatible With

AR-15 lower receivers. Lowers designed for FAL pattern magazines. DPMS Gen 2 (GII) receivers may have different specifications. Armalite AR-10 pattern lowers use different dimensions and are not compatible.

Legal Notice

The CMMG AR-10 ZEROED Lower Parts Kit, Mk3 contains components only and is not a firearm. No FFL is required for purchase. State and local laws vary regarding firearm assembly. It is the buyer’s responsibility to understand and comply with all applicable laws.