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Strike Industries

SI UDC Ultimate Dust Cover for 308

The patent pending SI UDC enables users to attach and attached and detach the cover in 5 to 10 seconds with ease!

Availability: In stock

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It is constructed of a high-density polymer making it more durable and functional than the traditional dust covers. The Ultimate Dust Cover features an adjustable detent set screw in order to compensate wear on the receiver and increase or decrease opening power (To adjust detent: use small flathead driver and depress the ball detent and adjust as necessary.). Choose multiple designs to customize your AR! 

NEW features of the Ultimate Dust Cover Enhanced Version include the added cut-out window on the rod for easy disassemble and that it has been made thinner than the original weighing in at only 0.4oz!

Additionally, The "True Seal" Lip has been slightly modified to provide an even better seal than ever before!

Package includes:
- 1x Dust Cover
- 1x Spring
- 1x Pin

- Patent pending spring-loaded, internal detent rod for easy installation and take-down.
- Constructed with lightweight durable polymer material
- Will never corrode rust or fade
- Will never deform or get bent out of shape
- Comes in a variety of designs
- Patent pending, True Seal internal lip that seals the port tighter than traditional dust cover designs.
- Built-in adjustable detent set screw to compensate for wear on the receiver.

-Available for AR-15 and AR-10

for the AR-10 308

The SI UDC has been tested and fits on Mega Arms MATEN, DPMS Oracle, SIG 716, YHM, and SW perfectly. It is easily modified to fit other receivers with light sanding.

The 308 UDC-E is not guaranteed to fit all receivers nor be able to be modified to fit due to there being no standard for the AR10 platform.

Additional Info

Additional Info

Manufacturer Strike Industries
Finish No
Barrel Length No
Caliber No
Configuration No
Option No
Gas Length No
Height No
Rail Length No
Mount No
Profile No
Reticle No
Co Witness No
Size No


Customer Reviews (4)

No commentReview by
- (Posted on 3/31/2017)
No commentReview by
I purchased this SI UDC .308 Dust Cover to go on a Aero Precision M5 upper that I am building. This dust cover fit perfectly out of the box and needed no trimming/fitting. It was a breeze to install and looks great. I wish SI made a metal version that is just as easy to install and I would have the option of getting it laser engraved for a more custom appearance but this polymer version is fine as it comes. (Posted on 11/13/2016)
Excellent Fit & FunctionReview by
Very happy with this product. Installed on a Mega Maten upper. Fits perfectly and blends in with the anodized finish. Latched correctly for me straight out of the box. If you need to adjust the latch, use a small flat screwdriver to adjust the ball detent up or down to fit with your upper. (Posted on 7/29/2016)
Does the job, I guess.Review by
Purchased this because there were no metal ones available. Installed and would not close and stay closed. Fiddled with it and best I can get it is to close when you push in a certain way and hold your tongue to the left just perfectly. Once closed it works great. Part of the problem was there is a lip on the door that is supposed to fit inside the opening. Mine didn't fit very well. I was using a standard forged upper so I don't think this was the problem. (Posted on 2/15/2016)

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