The CMMG 9mm AR Ejection Port Cover Kit (brand part no. 22BA627) is a complete replacement kit for the dust cover assembly on a 9mm AR-platform upper. CMMG packages everything needed for the repair in one kit: the ejection port cover, the hinge rod, the brass deflector, and the coil spring that keeps the cover snapped shut when the action is closed. It is the same style of dust cover found on most mil-spec AR uppers, keeping dirt and debris out of the receiver when the rifle is not in use. This kit lets you restore a worn or damaged dust cover assembly without sourcing each small part separately.

Key Specifications

• Complete kit including ejection port cover, hinge rod, brass deflector, and spring.
• Sized for 9mm AR-platform uppers using a standard dust cover assembly.
• Brass deflector helps direct spent 9mm casings away from the shooter’s face during ejection.

Frequently Asked Questions

What does this kit include? It includes the ejection port cover, hinge rod, brass deflector, and spring needed for a complete dust cover repair.

Is this for a 9mm upper specifically? Yes, it is sized and configured for a 9mm AR-platform ejection port.

Buy the CMMG 9mm AR Ejection Port Cover Kit

Order the CMMG 9mm Ejection Port Cover Kit from our Lubbock, Texas gun shop and get a worn dust cover back to factory function in minutes. It is an easy way to keep your AR dust cover assembly complete and reliable. Add it to your cart for fast, insured shipping direct to your door.