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Aero Precision AR15 XL Stripped Upper Receiver
As Low As $84.59 Save Up to 23%
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Most Helpful Positive Review very nice upper
High quality upper. I’ve bought several of these to build AR’s in 450 Bushmaster, 458 SOCOM, and 12.7x42. This upper works with all these large bore cartridges. Finish on the upper is excellent. I usually use an Aero Precision lower to match the upper but I’ve used them with other brand lowers a...
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Most Helpful Negative Review Cerakote could be better
The cerakote looks nice and feels smooth on the outside, but the texture of the inside surface where the bolt carrier rides is pretty rough. Some commenters on Practical Machinist recommend sanding the inside of these with fine grit sandpaper, but I hate to have to do that to a brand new part that's...
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its an upper and it works

by richard, Verified Owner from AL, United States Written on November 16, 2025
It’s an upper and it functions like an upper with out exploding.
Would recommend: Yes
Was it helpful to you? Yes | No

Remember to blend the feed ramp!

by Spent Brass Goblin, Verified Owner from NC, United States Written on August 19, 2025
I ordered the FDE version. The finish was flawless. It runs my 458 socom nicely. Just a reminder, this is made for the big bores. You will have to blend the feed ramp with the barrel. A few moment and a dremel is all it took.
Pros:
  • excelent fit and finish
Cons:
  • need to blend feed ramp
Best Used for:
  • custom big bore builds 45 BM 458 socom 50 beowulf
Would recommend: Yes
Was it helpful to you? Yes | No

Aero Precision AR15 XL Upper - For Large Caliber AR15s

by Greg L, Verified Owner from OH, United States Written on August 23, 2024
Not much more than an Anderson upper & necessary for .450 Bushmaster or .458 SOCOM. The ejection part is enlarged but it uses standard AR15 upper parts (forward assist & dust (ejection port) cover). The cutout for the port is 3mm higher to allow for ejection of the larger brass of .45 caliber ammunition.
Would recommend: Yes
1 of 1 found the following review helpful.
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very well made

by Concours14, Verified Owner from OH, United States Written on April 22, 2024
I purchased this to build a 450 Bushmaster pistol. The receiver is very well made and the fit is very snug with the Anderson lower I was using. It has an enlarged ejection port for the large caliber cartridges. Top rear of receiver marked “XL”, also T-marked. I’ve purchased and used several of these upper receivers and they’ve always worked great.
Pros:
  • high quailty great price
Cons:
  • None
Would recommend: Yes
1 of 1 found the following review helpful.
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Solid upper for CMMG AR-9 build

by chowar07, Verified Owner from NC, United States Written on March 2, 2024
Built a CMMG RBD 9 mm upper using one of these last year. I liked it so much I'm building a second one for my wife. It's a tighter fit for the barrel than the CMMG mk4 upper but it works if you use a heat gun on it along with Aeroshell.
Would recommend: Yes
1 of 1 found the following review helpful.
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Aero Precision

by Nicashb, Verified Owner from RI, United States Written on February 29, 2024
You just can't go wrong with Aero Precision. Perfect fit form and function.
Would recommend: Yes
1 of 1 found the following review helpful.
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Cpl Johanne Nelson

by Hondo, from IL, United States Written on April 20, 2023
I am satisfied with the product but the order process is long and tedious. A database with the names of officers and their departments could speed up the process for verification and faster delivery. The product itself sturdy and functions well.
Would recommend: Yes
1 of 3 found the following review helpful.
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Upper receiver

by Buck, from TN, United States Written on March 7, 2023
Great product received promptly nice finish no nicks/scratches looks to flawlessly made great product as always have no problems with it nor the company great service as always will continue to do business them
Would recommend: Yes
2 of 2 found the following review helpful.
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