AR-15 MK3 Ejection Port Cover KIT
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CMMG
Overview
The CMMG AR-15 Mk3 Ejection Port Cover Kit is a durable component designed to keep your firearm's action clean and free from debris by covering the ejection port when not in use. Made from steel, this black dust cover provides reliable performance and protection, ensuring that your rifle functions smoothly in various conditions. This part is commonly found in builds featuring a mid-length gas system and chambered in .223 Wylde, making it a practical choice for those configurations.
Specifications
Available Merchants(7)
Prices checked
Price Alert
October 2026 on GunPartPicker
CMMG AR-15 MK3 Ejection Port Cover KIT ranked #40 of the 65 dust covers builders added on GunPartPicker in October 2026. Builders have added it to their builds on GunPartPicker. Since April 2026, it ranks #72 of the 134 dust covers builders have added.
Availability is good: it was in stock at one retailer or another nearly every time we checked in October 2026, and today 4 of the 7 retailers we track have it in stock. Prices barely moved in October 2026, holding around $14.12, with no real sale all month. Buying today, the lowest price is $14.12 at Classic Firearms, which matches the best price we saw in October.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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Builds Featuring This Part
See all builds →Builds in the community that include the Ar-15 Mk3 Ejection Port Cover Kit
| Build | Parts | Total |
|---|---|---|
 | 22 | $1429.83 |
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