The CMMG Mk3 Ejection Port Cover Kit (part no. 38BA538) is a complete replacement for the ejection port dust cover on a CMMG Mk3 platform chambered in .308 Win. Whether the factory cover is broken, missing, or just worn out, this kit includes everything needed to get the port covered and protected again.

Key Specifications

• Built specifically for the CMMG Mk3 platform chambered in .308 Win.
• Includes the ejection port cover itself.
• Includes the rod needed for a complete installation.
• Includes the spring that keeps the cover closed until cycling.
• Finished in black to match standard Mk3 hardware.
• Weighs about 0.065 lb, adding negligible weight to the upper.

Frequently Asked Questions

What comes in this kit? The ejection port cover, rod, and spring for a complete replacement.

What platform does this fit? The CMMG Mk3 platform chambered in .308 Win.

Why would I need to replace my dust cover? A broken, missing, or worn ejection port cover no longer protects the action from dust and debris.

Buy the CMMG Mk3 Ejection Port Cover Kit

Order this kit from our AR dust covers selection to get your Mk3’s ejection port covered and protected again. Order it from our Lubbock, Texas gun shop for fast, insured shipping.