The Strike Industries Ultimate Dust Cover (SI-AR-UDC-E-308-01-BK) is a high-density polymer replacement for the standard AR-10 .308 ejection port cover. More durable than a stamped steel factory cover, this polymer dust cover resists corrosion, deformation, and fading. The spring-loaded internal detent rod lets you attach or remove the cover in 5 to 10 seconds — significantly faster than a standard dust cover, with no tools required.
Strike Industries Ultimate Dust Cover — Features & Design
The SI UDC .308 uses a high-density polymer construction that will not corrode, rust, bend, or deform over time. Key design features include:
- Spring-loaded internal detent rod — attaches and detaches in 5 to 10 seconds for fast field stripping
- Adjustable tension set screw — compensates for receiver wear and lets you dial in opening resistance over time
- High-density polymer build — lighter than steel, resistant to corrosion and deformation
- Black finish — will not corrode, rust, or fade
What’s Included with the Strike Industries UDC AR-10 .308
The package includes all three components needed for installation:
- 1x Ultimate Dust Cover (polymer, black)
- 1x Spring
- 1x Pin
Note: The dust cover, spring, and pin ship as separate components and require installation on the upper receiver. The dust cover assembly is not pre-installed.
Strike Industries SI-AR-UDC-E-308-01-BK Specifications
| Manufacturer | Strike Industries |
| Model | Ultimate Dust Cover (UDC) |
| SKU | SI-AR-UDC-E-308-01-BK |
| UPC | 700598350623 |
| Color | Black |
| Material | High-density polymer |
| Compatibility | AR-10 / .308 upper receivers |
| Includes | Dust cover, spring, pin |
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