308 AR Ultimate Dust Cover Capsule Black
$15.95 at Ammunition Depot · 6 stores
In stock
AR-15 Ejection Port Cover Kit - 308 AR Mk3 Ejection Port Cover Kit
CMMG · Upper Parts
No ratings yetBest price
$14.95at MidwayUSA
In stock checked Oct 1, 2026
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| MidwayUSA Best price | $14.95checked Oct 1, 2026 | In stock | Buy at MidwayUSA | |
| Ammunition Depot | $14.99checked Oct 1, 2026 | In stock | Buy at Ammunition Depot | |
| OpticsPlanet | $22.09Salechecked Oct 1, 2026 | In stock | Buy at OpticsPlanet | |
| Palmetto State Armory | $14.29Salechecked Oct 1, 2026 | Check store | Buy at Palmetto State Armory | |
| CMMG | $14.95checked Oct 1, 2026 | Check store | Buy at CMMG | |
| Brownells | $14.31checked Oct 1, 2026 | Out of stock | Buy at Brownells |
Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.
Price history
Lowest in-stock price in the last 30 days: $14.95 at MidwayUSA. Dashed line = out of stock. Tracking since Sep 28, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| Ammunition Depot | $14.99 | $14.99 | $14.99 |
| Brownells | $14.31 | $14.31 | $14.31 |
| CMMG | $14.95 | $14.95 | $14.95 |
| MidwayUSA | $14.95 | $14.95 | $14.95 |
| OpticsPlanet | $22.09 | $22.09 | $22.09 |
| Palmetto State Armory | $14.29 | $14.29 | $14.29 |
Since Sep 28, 2026.
About this part
The AR-15 Ejection Port Cover Kit - 308 AR Mk3 Ejection Port Cover Kit is an AR-10 upper part from CMMG. It's sold by 6 stores (3 in stock), from $14.29 to $22.09. The lowest in-stock price in the last 30 days was $14.95 at MidwayUSA.
Fits and works with
- Caliber
- .308 / 7.62x51 · Shop matching ammo
- Bolt
- AR-10 (.308 / 6.5 CM) · Bolt carrier groups
Specifications
- Manufacturer
- CMMG
- Type
- Ejection Cover
- Platform
- AR-10
From the manufacturer
Need all the small bits to add a port cover to your stripped upper receiver? CMMG's got you covered with the company's AR-15 Ejection Port Cover Kit, which includes not only the port cover itself, but also the hard-to-find rod and spring needed to complete the installation. Mfg: Cmmg
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