CMMG MK3 308 Ejection Port Cover KIT Black
CMMG
Overview
The CMMG MK3 308 Ejection Port Cover KIT Black is a dust cover. Compare prices from multiple merchants and find the best deal.
Specifications
Available Merchants(5)
Prices checked
Price Alert
October 2026 on GunPartPicker
CMMG MK3 308 Ejection Port Cover KIT Black was the eighth most added dust cover on GunPartPicker in October 2026, behind the Strike Industries Billet Ultimate AR-15 Dust Cover - Black, with about 5% of all dust covers added to builds. Down from #5 in September. Builds with this dust cover are nearly all chambered in 5.56 NATO, nearly all on mid-length gas, and nearly all AR-15.
Today 2 of the 5 retailers we track have it in stock. Buying today, the lowest price is $14.69 at Palmetto State Armory.
Updated · from real builds on GunPartPicker · 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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