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Aero Precision M4E1 Barrel Nut Wrench
$10.00 $9.99
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Most Helpful Positive Review AR15 M4E1 Enhanced Upper Receiver Barrel nut
This is only for the AR15 M4E1 enhanced upper from Aero Precision. It is not noted on the web page at all and made it hard for me to find when I was looking as well as it seems to have had a few people purchase it for other barrel nuts. The tool it’s self is grate it just needs an accurate descripti...
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Most Helpful Negative Review M4E1 AR15 Barrel Nut Wrench
Cannot use on its own with the Aero Precision BAR barrel nut even though it is from the same company. This is due to the nut wrench not having any points to leverage on the barrel nut. This tool will require experimentation to identify what you can use to make it effective without damaging your AR15...
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Aero wrench

by Mmoney, Verified Owner from TN, United States Written on October 22, 2025
Great wrench. It is needed for aero precision enhanced uppers.
Would recommend: Yes
Was it helpful to you? Yes | No

A Must have

by Ghozt, Verified Owner from VA, United States Written on November 17, 2024
A great product a must have for your build or an upgrade
Would recommend: Yes
Was it helpful to you? Yes | No

great tool

by Ghozt, Verified Owner from VA, United States Written on November 17, 2024
A must have tool for your tool bin if & when I need another one I know where it is
Would recommend: Yes
Was it helpful to you? Yes | No

Needs to be twice as thick

by O. V., Verified Owner from TX, United States Written on October 1, 2024
All smirks aside, this attachment would be 5 stars if it was twice as thick. There is too much play when you snap it on a pretty standard 1/2 inch torque wrench. The play can cause you to misalign the teeth and tear up your barrel nut enough to where you can’t get a good bite. Don’t ask how I know. I ended up with two of wrench attachments and stacking them on top of each other on the wrench driver removed the play. Maybe save some material cost by just adding some buildup right around the 1/2 inch opening. Could be improved, but I was finally able to get my M4E enhanced torqued to spec.
Would recommend: Yes
Was it helpful to you? Yes | No

The only tool for installing the barrel nut on the Aero Enhanced Upper Receiver

by Para Bellum Arms, from NC, United States Written on November 20, 2023
It does exactly what it is supposed to do. I'm not sure what some of the other reviewers are trying to do with it. The teeth fit into the Aero Enhanced barrel nut (not the Aero Precision B.A.R., which uses a standard free-float wrench). It has a 1/2" square socket for installing on a 1/2" drive torque wrench. If you don't know that this is what it is for or how to use it, please do some research about how to build an AR before you order one.

Note that this is included with all Aero Precision Enhanced Upper Receivers, so you don't need to order this separately!
Pros:
  • Well constructed
Cons:
  • None
Best Used for:
  • Aero Precision Enhanced Uppers
Would recommend: Yes
4 of 4 found the following review helpful.
Was it helpful to you? Yes | No

What is this for....

by Angel H., Verified Owner from VA, United States Written on January 6, 2021
What is this tool actually for? Like the first review I purchased it thinking that it was for my barrel nut but it wasn't. There is nothing at this point that I can use this for. It is well constructed, sturdy, and machined well. I dont want to give a bad rating but I can't give a good one at this time either.
Best Used for:
  • Looking at it. Lol
Would recommend: No
0 of 5 found the following review helpful.
Was it helpful to you? Yes | No
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