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Guntec USA Gen 3 AR-15 Ejection Port Dust Cover Assembly
As Low As $15.13 Save Up to 43%
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Most Helpful Positive Review nice product
I purchased one of these in the anodized black and the finish is flawless. Installed it on my Foxtrot Mike fm15 upper and the fit is great. (It fits like a standard dust cover) Overall I think it's a nice product. Not sure why the other reviews are so bad but perhaps they have better quality control...
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Most Helpful Negative Review junk and poor fit
absolute junk does not fit aero upper. Had to file down the detent part to make fit. Ended up in the trash. Came with tons of anodizing flaws and some small chips. You will not be happy with this dust cover as other reviews have mentioned
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Looks and feels great

by BRANDY BLACKWELL, Verified Owner from MO, United States Written on May 31, 2025
Great quality. Great anodizing. Perfect fit. Works flawlessly.
Would recommend: Yes
Was it helpful to you? Yes | No

Perfect Fit

by Chris, Verified Owner from FL, United States Written on May 14, 2025
Perfect fit on my stern defense 9mm upper. Highly recommended. Only thing is that the pink in the picture looks lighter than what it really is.
Would recommend: Yes
Was it helpful to you? Yes | No

Poor fitment

by Swish, Verified Owner from MN, United States Written on April 20, 2024
This dust cover does not close tightly, and there is only a set screw to keep it in the closed position
Would recommend: No
Was it helpful to you? Yes | No

Great product, if it fit...

by Regular Customer, Verified Owner from PA, United States Written on March 7, 2024
Overall the quality of the part was perfect. Great color and consistency in the finish. Unfortunately the rod channel was ~1/8-3/16" too wide to fit any of my Mil-Spec AR15 uppers. It's almost like someone mis-labeled the parts and they're really AR10 dust covers.
Would recommend: No
Was it helpful to you? Yes | No

nice looking but doesn't fit anything

by Kevin James, Verified Owner from IN, United States Written on September 27, 2023
I've tried this on multiple upper receivers including Aero Precision (mil-spec and M4E1), Anderson, WMD, store-brand generics, anodized, Cerakoted, and raw, and it doesn't fit any of them. The radius on the the upper ends is the same as on a mil-spec door, but the mil-spec door is a flimsy piece of sheet steel. The radius is simply too sharp for the thicker billet aluminum to fit into the recess on the side of any upper receiver. The Timber Creek billet ejection port door has a larger radius, so it fits, but it's about 50/50 on actually latching and even less on staying latched, so I can't win with a billet door....
Pros:
  • None
Cons:
  • Fits nothing
Best Used for:
  • not ordering
Would recommend: No
Was it helpful to you? Yes | No

DO NOT BUY FOR Aero Precision M4E1 No Forward Assist Threaded Stripped Upper Receiver

by Alfonso Vazquez, Verified Owner from TX, United States Written on April 15, 2023
Took to a licensed gun smith to install and was no good. Don’t not purchase this for the Aero Precision M4E1 No Forward Assist Threaded Stripped Upper Receiver as it does not fit at all. Had to return asap.
Would recommend: No
Was it helpful to you? Yes | No

Nice looking dust cover, easy to install

by Jim from Columbus, Verified Owner from OH, United States Written on December 1, 2022
Installed much easier than I was expecting, and it looks very nice. My only complaint is the pin that holds it shut if you close it over the ejection port seems to shift easily. I don't know if it's heat expansion, not enough grip on the threads or what, but often after shooting, and everything has cooled, I have to readjust the screw so it will snap shut and stay. Otherwise, perfect replacement.
Would recommend: Yes
Was it helpful to you? Yes | No

Amazing and simple to install dust cover

by DroneShotFPV, Verified Owner from IL, United States Written on November 17, 2022
What can I say? I know... This is a GREAT dust cover, which has been the absolute EASIEST to install in my many years of building AR platform rifles. The bar it comes with is so smooth and easy to run through the mounting holes for the dust cover that I kid you not, it took longer to twist the spring around properly than it did to push the bar through! All in all took me literally 4 minutes to swap out my old, put the new in and be done. In fact the adjustment for the stop pin / close pin for the port to retain shut took the most time (not hard, just saying it was the longest part lol).
Color is amazing, looks sleek enough as it matches all my billet components. Love it, recommend it!
Pros:
  • Fit
  • Aestetically pleasing
  • look & feel
  • Ease and fit
Cons:
  • None
Would recommend: Yes
1 of 1 found the following review helpful.
Was it helpful to you? Yes | No

Scratches all over

by dhard, Verified Owner from FL, United States Written on August 30, 2021
Piece came with scratches all over the face and it will have to be cerakoted. very dissatisfied looks like an unfinished part. Not as pictures shows looks very different in person for the black color at least
Pros:
  • None
Cons:
  • Finish
Would recommend: No
0 of 1 found the following review helpful.
Was it helpful to you? Yes | No

color did not match photo

by Alan Bautista, Verified Owner from IN, United States Written on July 26, 2021
Color of the gold in the picture was not the color of “gold” i received. Instead of gold it was a more orange like tint. I was going to return it but didnt feel like going through the hassle just to have someone tell me at the end of the day it was lost in transit & im at a loss so I’ll turn to resell it myself
Would recommend: No
Was it helpful to you? Yes | No
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