Strike Industries Enhanced .308 Ultimate Dust Cover - Capsule - Black

Manufactured by Strike Industries
SKU: SI-AR-UDC-E-308-03-BK
MPN: SI AR-UDC-E-308-03 BK
Manufactured by Strike Industries
11 Reviews

In Stock

NOTE: Limit 10 per household. Quantities exceeding 10 will not allow checkout.

We are fully staffed and processing orders. Standard orders are shipping in approximately 1 business days or less. FFL orders take approximately 10 business days or less if you can provide us an actively receiving FFL location. Due to high demand, there is a limit of 5 FFL items in a 30 day period.



Strike Industries products are designed by shooting experts for the shooting sportsman.

The Strike Industries Enhanced Ultimate Dust Cover is the world's first quick disconnect ejection port cover for the AR-308! Manufactured from high-density Nylon polymer, the UDC will never corrode, rust, fade, or deform. It features an internal True Seal lip to better protect your rifle from the elements. A built-in adjustable detent screw allows you to easily compensate for receiver wear, or increase/decrease opening power.

The spring-loaded internal detent rod provides easy installation and take down, often taking just 5-10 seconds! Features a cut-out window for easy installation or removal, without impacting the True-Seal capabilities!

NOTE: The SI UDC has been tested to fit Mega Arms MATEN, DPMS Oracle, SIG 716, YHM, and S&W upper receivers. While it is easily modified to fit other receivers with light sanding, the UDC is not guaranteed to fit all upper receivers.

  • Spring-loaded, internal detent rod
  • Polymer construction
  • Cut-out window
  • Resistant to corrosion, rust and fading
  • True Seal internal lip
  • Adjustable detent set screw
  • Weight:  0.4 oz
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BrandStrike Industries
EngravingCapsule Pattern

WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see

Better than steel, but...


Capsule styling looks great with Aero M5E1 upper and 12 inch keymod handguard, but... some fit issues and required some trimming to snap closed.

Good Dust Cover


I love the SI Ultimate Dust Cover for AR-15's so I decided to go for one on my Aero Precision M5 308 build. The cover looks good but doesn't fit great. I sanded it and it fits better. I think the good looks offsets the minor figment issues. I highly recommend!



nice looking and innovative installation. did not really fit aero m5 upper well but fit saltworks upper with no mods

Great Dust Cover


Remember if you have a billet Mega Maten or similar the process of installing this dust cover is lengthy unless you want to risk cutting the other dust cover out.



Wasn't aware that this was plastic. Not a huge deal just would've preferred metal. Probably just me not paying attention though. Most likely the second one. Still gonna use it. Solid product

Strike Industries Enhanced .308 Ultimate Dust Cove


Would give this product a zero if it was available. I have three different brands of DPMS/SR25 type upper receivers. It won't fit any of them.

Does not fit PWS MK2


Cannot get this to fit MK2 receiver set from PWS in spite of a lot of time sanding it down. Will be replacing with Black Rain Ordnance.

Not generic fit.


This item did not fit my PA 10. It would take serious modification to make it fit.

Incompatible with DPMS compact hunter 308


Bought this for a DPMS compact hunter 308, and it does not come even CLOSE to fitting. I don't know if the DPMS upper requires a specific cover or what, but this one is a good CM too small and wouldn't fit properly.

A Poor Quality Product.

by -

Product was defective out of the box. The spring was missing a leg that makes the dust cover pop open, and the latch pin did not engage the receiver so the dust cover wouldn't stay closed. Did appreciate the spring loaded pin that made installation a breeze.

Very pleased


Fantastic dust cover (for my application), fits the JL Billet upper as though it was made for it! I made a bit of a mistake when installing the JP barrel nut and forgot to install a dust cover first (JP uses red loktite for install soooo yeah) thereby blocking the pin from installing, so luckily Strike came to my rescue with their quick connect/disconnect system. Very easy to install, really well made and works perfectly. I have a friend that installed the AR15 version on his custom build and he likes it too.
<br>Pity to see this does not fit some applications per the reviews here, but when it works it is great!