CMMG Ejection Port Cover MK3
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CMMG
Overview
The CMMG Inc Ejection Port Cover MK3 is a standard dust cover designed to protect your AR-15's ejection port from debris and environmental elements when not in use. This component is essential for ensuring reliable operation and maintaining the cleanliness of the chamber, which can be critical for performance during shooting. You'll find this dust cover commonly used in a variety of builds focused on reliability and functionality.
Specifications
Price and stock
The CMMG Ejection Port Cover MK3 was in stock most days in September 2026, and today only CMMG has it in stock. Prices barely moved in September 2026, holding around $14.99, so there haven't been real sales lately. Buying today, the lowest price is $14.95 at CMMG, which matches the best price we saw in September.
Prices checked · refreshed daily across 37 retailers
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Read the guide: AR-15 Dust Cover Guide →Frequently Built With
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