CMMG 55BA6E3 Ejection Port Cover AR-15 Black 6061-T6 Aluminum

Keep the action of your AR-15 clean and clear with the CMMG 55BA6E3 Ejection Port Cover. This mil-spec dust cover kit is precision machined from black 6061-T6 aluminum, giving you a lightweight, durable replacement that snaps into the ejection port cutout of any standard AR-15/M16/M4 upper receiver.

The 55BA6E3 kit includes the cover, the rod, and the spring, everything you need to replace a missing or worn dust cover on your rifle or pistol build. Properly installed, the spring-loaded cover snaps shut after each round to keep dust, dirt, and debris out of the action between strings of fire.

Whether you are finishing a new build, restoring an older upper, or just replacing a lost cover, this CMMG part delivers a reliable, no-nonsense fit that meets or exceeds mil-spec dimensions on the AR-15 platform.