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Aero Precision M4E1 Threaded 20in 5.56 w/ ATLAS S-ONE Handguard Complete Upper Receiver with Flash Hider
As Low As $559.99 Save Up to 22%
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Most Helpful Positive Review Aero Precision 10.5 upper
This upper is exactly what you’d expect it to be. I got the Fde model and the coating on it is really tough and durable. When I received the upper I wasn’t sure if it came with the gen 1 or gen 2 upper receiver, wasn’t a big deal at all to me but it did come with the gen 2 with the slight angled sid...
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Most Helpful Negative Review Fit and Finish is Very Good
It looks great. Fit and finish is good, but the accuracy is underwhelming especially with lighter weight bullets. Similar uppers are less expensive and so despite Aero Precision's reputation for quality, I can't say I would recommend it.
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Awesome upper!

by Aero fan, Verified Owner from OK, United States Written on September 12, 2024
This upper looks great can’t wait to throw a scope on it
Would recommend: Yes
Was it helpful to you? Yes | No

Great upper very accurate

by Todd L, Verified Owner from PA, United States Written on February 17, 2024
Aero makes great products and there uppers are some of the best. I've used a few of there uppers and parts in my builds. The upper is one of the most important parts and you should want the best. O.P has some of the best prices on there products
Pros:
  • great quality
Cons:
  • None
Best Used for:
  • Accuracy and reliability
Would recommend: Yes
Was it helpful to you? Yes | No

Aero Precision M4E1 20 in

by fish247, from MO, United States Written on December 21, 2023
This upper by Aero Precision is exactly what i needed .The atlas s-one handguard is a perfect fit . The 20'' barrel held excellent groups @ 100 yds.
The ceracote FDE finish is perfect and is great match for my lower .

Thank you very much !
Pros:
  • Everything about it is great
Cons:
  • not one thing about it is negative
Best Used for:
  • hunting
Would recommend: Yes
Was it helpful to you? Yes | No

Beautiful puece

by Bob, Verified Owner from TX, United States Written on June 8, 2023
I have yet to shoot the rifle but with it all put together with this upper, it looks, and feels incredible in the hand. The only problem I have is the top rail not being present full length but I'll get used to it, simply just a bit less diameter than I expected.
Pros:
  • None
Cons:
  • Bit thin for big hands
Would recommend: Yes
0 of 1 found the following review helpful.
Was it helpful to you? Yes | No

Works like a dream

by Raven, Verified Owner from NM, United States Written on April 2, 2023
Paired this with an Aero lower half. It looks great, and functions great. I put a 60 shot group of M193 through one hole about an inch and a half wide at 25 yards (indoor range)... and I'm not really that great of a shot. Great value, great product.
Pros:
  • Accurate
  • reliable
  • solid
  • sleek
  • well built
Cons:
  • None
Best Used for:
  • Varmint Hunting
  • Home defense
  • Target shooting
Would recommend: Yes
Was it helpful to you? Yes | No

Exceeded expectations

by Dan, Verified Owner from FL, United States Written on November 2, 2021
I bought 10.5 and have it suppressed. The rails are ported for gas release which makes a nice difference when shooting. Very high quality upper. Aero is essentially the best you can get with some of the “top” brands asking $1200 for an upper with 1 year lead time. I have some of these brands and shot others and tbh there’s no difference in quality, You're just paying for a name on the side. If you’re looking for a high end upper look no further
Would recommend: Yes
5 of 5 found the following review helpful.
Was it helpful to you? Yes | No

Awesome fit and functional deliver fast.

by John, from PA, United States Written on April 3, 2021
The Areo upper is Quality the fit lines were as they should be. The hand guard fit the hands nice .functionality never missed a beat all it took to set up was an inspection cleaning lube and done I would recommend anyone looking for. A quality upper to check Areo out. Seems when ever I use their components everything matches up and works as should !
Would recommend: Yes
Was it helpful to you? Yes | No

Fantastic Upper

by Dude, Verified Owner from OH, United States Written on April 3, 2021
This upper has a very nice and tight fit and finish especially when paired with an Aero lower. For the money and even higher priced uppers don’t have the quality, fit, finish, or features that the Aero M4E1 uppers have. Absolutely no complaints at all and it’s very accurate as well.
Would recommend: Yes
Was it helpful to you? Yes | No

great product

by slippery mitts, Verified Owner from MI, United States Written on March 29, 2021
Received this a lot quicker than I expected. Performed great at the range! Fits really well with my lower, even tested out on some other non Aero lowers. I was super impressed with the shipping time from optics planet.
Would recommend: Yes
Was it helpful to you? Yes | No

Great product

by ar junkie, from MO, United States Written on November 22, 2020
Flawless operations between two different bcgs. I can't think of anything that I would change. For the price, you can't beat it. I purchased this upper as a present for my son, for his first AR. After a trip to the range....looks like I'll be buying another one. lol
Would recommend: Yes
Was it helpful to you? Yes | No
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