Description
MPN: 38BA686
Features:
- Designed for AR-10 / LR-308 Platforms: Built specifically for CMMG Mk3 and compatible AR-10/LR-308 upper receivers
- Lightweight Polymer Construction: Rigid polymer design reduces weight compared to traditional metal dust covers while maintaining durability
- Durable & Impact Resistant: Engineered to withstand regular use while protecting the chamber and internals from debris
- Streamlined Appearance: Modern polymer design offers a cleaner, more refined look for custom AR builds
- Complete Installation Kit: Includes the components needed for straightforward installation
- Ideal for Lightweight Builds: Great choice for shooters looking to shave weight without sacrificing reliability
- Lifetime Quality Guarantee: Backed by CMMG’s Lifetime Quality Guarantee against material and workmanship defects
Specifications:
- Material: Polymer
- Weight: 0.53 oz.
Compatibility:
- AR-10
Includes:
- 1x CMMG Mk3 Polymer AR-10 Dust Cover (DPMS 308 style)
- 1x Dust Cover Rod (DPMS 308 style)
- 1x Dust Cover Spring
Details:
The CMMG Mk3 Polymer Dust Cover Kit is a small upgrade that focuses on practicality rather than flash. Built specifically for CMMG Mk3/LR-308 large-frame receivers, this dust cover performs the same job as a traditional AR ejection port door while trimming a little weight from the upper.
Instead of stamped steel, the cover itself is made from polymer. That change helps reduce weight slightly and eliminates concerns about corrosion over time. It’s a simple part, but it keeps the chamber area protected from dust, dirt, and debris while the rifle is being carried or stored.
Complete Replacement Kit
The kit includes the dust cover along with the hinge rod and spring, allowing you to replace the factory door or install one during a new upper build. Installation follows the same process as a standard AR-style dust cover.
Simple Part That Protects the Action
It’s not the most glamorous component on a rifle, but a functioning dust cover plays an important role in keeping the action clean. The CMMG Mk3 Polymer Dust Cover Kit keeps debris out of the chamber area while maintaining proper fit and function on Mk3 large-frame uppers.
For anyone assembling or refreshing an Mk3 upper receiver, it’s a straightforward replacement that does exactly what it’s supposed to.
