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
Build history on GunPartPicker
Builders have been adding the CMMG MK3 308 Ejection Port Cover KIT Black to their builds on GunPartPicker since July 2026. All time, it ranks #24 of the 109 dust covers builders have added.
Today 2 of the 4 retailers we track have it in stock. Buying today, the lowest price is $14.29 at Palmetto State Armory.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 retailers
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Read the guide: AR-15 Dust Cover Guide →Frequently Built With
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Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
PlatformBased on real build data showing which platform (AR-15, AR-10, AR-9) builders pair with this product.
CaliberBased on real build data showing which calibers builders choose alongside this product.
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
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