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AR-15 A1 EJECTION PORT COVER ASSEMBLY Reviews & Ratings

AR-15 A1 EJECTION PORT COVER ASSEMBLY

Our Brownells A1 Ejection Port Cover is an accurately detailed replica of the cover used on M16A1 and earlier rifles - basically the Vietnam Era guns. Unlike the standard A2 cover still in use today, the A1 has a smaller, rectangular finger pad with crisp 90 degree edges. On the inner side, an early-style hexagonal housing retains the catch detent and spring, rather than the simpler, easier to manufacture cylindrical housing of the A2 cover. Aside from these physical details, the Brownells A1 Ejection Port Cover operates and installs just like the covers on modern-day rifles. It's made of stamped steel (not plastic - of course!), with a classic matte dark gray Parkerized finish that's a good match to our Retro Rifle receivers.

Correct style for M16A1 & earlier rifles that should have a port cover
Steel with durable Parkerized finish
Correct-spec smaller, rectangular finger pad
NOTE: Pin, C-clips & spring NOT included

If you've gone to the effort of building up a nice early AR-15 / M16 Retro Rifle from Brownells parts, why cut corners on the details? The A1 Ejection Port Cover provides that finishing touch of historical accuracy.

See all of our AR15s and AR15 parts here.

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2 Stars

1 Stars

Reviews Summary

Customers praise the AR-15 A1 Ejection Port Cover Assembly for its quality and authenticity, perfect for retro builds. However, many express disappointment that it lacks necessary hardware, impacting convenience. While most find it visually appealing, some note finish imperfections and weight issues. Overall, it's seen as a solid choice for restoring vintage rifles.

What Reviewers Are Saying

Product Quality

80%

Reviewers consistently highlight the quality and craftsmanship of the ejection port cover. Many comment on its impressive fit and finish, with most feeling it accurately replicates the original aesthetic. However, a few note finish imperfections that compromise the overall appearance.

Missing Hardware

70%

A common theme is the frustration over the absence of essential hardware, such as the pin, spring, and e-clip, which are not included with the purchase. Many reviewers felt misled, wishing that the product came as a complete kit instead of requiring additional orders.

Authenticity

60%

Several customers value the authenticity of the ejection port cover for their retro builds. They appreciate that even slight discrepancies in color add to the historical accuracy of their vintage rifles, making them feel more genuine.

Value for Money

50%

Though some reviewers consider the product pricey, many agree that given the uniqueness and quality, it is a worthwhile investment. They emphasize that its performance and reliability justify the cost, often recommending it despite the expense.

Finish and Durability

40%

While the overall quality is praised, some reviewers express concerns regarding the finish, describing it as overly shiny or prone to wear. A few have suggested that applying a different finish could enhance durability and aesthetic. This observation indicates a possible area for improvement.

Customer Photos & Videos

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Perfect fit

I had an A2 door on my A1 clone and it looked a bit off, so I purchased the correct version and the quality of fit was spot on! Highly recommend this product for an replacement for your A1

by Clayton Tanner on May 14, 2026

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Perfect to correct my A1 Upper

Needed this to correct my A1 upper, came with the newer A2 cover and it bugged me. Works great and arrived quickly!

Would you recommend this? Yes, I would recommend to a friend

by JAZZVERSO MILLER-HAYES on October 04, 2025

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Retro Dust Cover

Very well made. Nice fit and finish,Looks just like the originals. Fast shipping and great price.

by LOWELL CARTER on May 20, 2024

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Perfecr for a retro build!

I'm current building an M16A1 rifle and want to keep it as close to authentic as possible. The only piece i needed to complete the upper was an ejection port cover. Of all the online businesses, Brownells was the only one that had them in stock. The reproduction is meticulous from form to function. Looks perfect on the retro build! My only complaint, and it's not really a complaint, the ejection was not offered as a kit. Each part needed to be purchased separately. It still gets a five star rating.

by Brian Koopman on May 04, 2024

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Retro Build

I am doing a retro USAF 604 build, needed a small pad ejection port cover. I see a lot of mention of colors not matching. Well in my 23 years in the Air Force, I don't remember any of the 604s having much if any matching colors on the parts. Just makes it look more authentic in my opinion. Installation was straight forward and easy enough, that's saying a lot as this is my first ever build. Pictures show it installed, ignore the A2 buttstock and pistol grip, just a mock up and test fitting.

Perfect retro reproduction part

Hard to tell apart from my original Colt port doors. Fit perfectly and the price was affordable.

Excellent Quality

This reproduction A1 ejection port cover is expensive without the hardware, but it is very high quality. The finish is a dark black parkerization so it wont match up to your gray build without a little bit of work. I ordered four of these, and each one had a bit of a bend to it. I straightened each one out and they installed easily. Great product, more of a buy once cry once deal to make your vintage rifle complete!

Needed for my A1 clone

Needed it to complete my M16a1 clone. Very solid, seems well made. Wish it came with the spring, rod and c clamp.

by CHARLES CARTER on March 24, 2024

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It works well

These ejection port covers are pretty well made and are a good representation of the early style covers. Ive purchased several of these over the years. Theyre well made but the finish on them can easily be scratched. Putting on an other finish, like DuraCoat would solve the finish problem. These early style covers are not easily purchased so Ive bought all of them from Brownells. Im glad that Brownells sells them.

Worked well

This part is expensive but most unique gun parts are. This part worked fine. Ive purchased several of these over the years. All of them had slight finish wear for some reason. Theyre new but dont look new because the finish is rubbed off the raised areas. Finishing it to match the upper/lower receivers is the best thing to do.