Marked AR15/M16 Ejection Port Cover 5.56 NATO
$10.95 at OpticsPlanet · 6 stores
In stock Sale
Best price
$10.95at MidwayUSA
In stock checked Oct 1, 2026
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| MidwayUSA Best price | $10.95checked Oct 1, 2026 | In stock | Buy at MidwayUSA | |
| OpticsPlanet | $11.99Salechecked Oct 1, 2026 | In stock | Buy at OpticsPlanet | |
| Brownells | $8.21Salechecked 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: $10.95 at MidwayUSA. Dashed line = out of stock. Tracking since Sep 28, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| Brownells | $8.21 | $8.21 | $8.21 |
| MidwayUSA | $10.95 | $10.95 | $10.95 |
| OpticsPlanet | $11.99 | $11.99 | $11.99 |
Since Sep 28, 2026.
About this part
The Polyflex Dust Cover For .223 Black is an AR-15 upper part from Strike Industries. It's sold by 3 stores (2 in stock), from $8.21 to $11.99. The lowest in-stock price in the last 30 days was $10.95 at MidwayUSA.
Fits and works with
- Caliber
- 5.56 / .223 · Shop matching ammo
- Bolt
- Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups
Specifications
- Manufacturer
- Strike Industries
- Color
- Black
- Type
- Ejection Cover
- Platform
- AR-15
From the manufacturer
The Strike Industries PolyFlex Dust Cover for .223/5.56 offers a simple, quick and tool-less installation with its one-piece construction. Install in literally seconds by just pushing it into place. With our patent pending "True Seal" design, the internal lip seals the port tighter than traditional dust covers. Unlike stamped steel dust covers, this PolyFelx DC is made of durable and lightweight polymer which makes it resistant to rust. If the time ever comes, knowing you can remove and quickly reinstall makes this an easy cost-effective choice. Consider the Strike Industries PolyFlex Dust Cover for .223/5.56 for a new build or when you are going to untorque the barrel nut as th Mfg: Strike Industries
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