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What is enhanced about this upper? — 6 Answers

by ADLEE2, from LA, United States Asked on March 18, 2020

Name Aero Precision M5E1 .308 Enhanced Upper Receiver (4.6)
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Answered by Patriotic Realist, member, from OH, United States, on April 02, 2021

The upper has a specialized extension and barrel nut which works with enhanced compatible handguards. The handguard is much easier to install and get/keep straight. I believe it also provides additional heat sinking for the barrel at it's hottest point versus a standard barrel nut design. Just google some pics of "Aero Enhanced Barrel Nut" and "Aero Enhanced Upper" to see the difference. The compatibility with the Atlas handguards makes it worth it for an "enhanced" upper. The Aero Lower Enhanced Receivers have a number of features that make them better than standard.

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Answered by Aero Precision, member, from WA, United States, on April 28, 2021

The main difference between our Enhanced Uppers vs our threaded uppers is the handguard attachment system. The Enhanced Upper is a single forged piece that directly attaches to the handguard and is secured by 8 Torx T15 screws. Traditionally you would secure the handguard to the barrel nut once you have installed the barrel onto the upper. The direct interface to the upper increases rigidity, eliminates the need for barrel nut timing and make maintenance a breeze. This upper is only useable with our M5 Enhanced Handguards which have a large internal diameter allowing you to "tuck" or "sink" up to a 1.5" suppressor inside.

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Answered by Sandstorm, member, from CT, United States, on January 04, 2021

The enhanced designation relates to the way the handguard mounts to the upper receiver. An aero enhanced upper receiver is only compatible with an aero precision handguard.

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Answered by Burke Headrick, member, from NM, United States, on January 03, 2021

The barrel nut/ handguard mounting system is different. The handguard mounting system is forged into the reciever. Barrel nut is smaller to dissipate heat.

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Answered by Bink, member, from CA, United States, on January 08, 2021

It has the cuff built in to the upper for a few floating handguard it’s rad!

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Answered by Toby, member, from OK, United States, on January 06, 2021

Aero precision has designated their "enchanced" uppers to distinguish them from standard stripped upper receivers. The enhanced means it comes with a proprietary barrel nut and it wont accept every handguard out there. However, when combined with Aero's "enhanced" handguard of the same platform it seriously reduces the labor and difficulty of installing a handguard. Plus I personally like the enhanced handguard look. Be aware that if you dont want to use aero precision's handguard then a regular stripped upper is likely what you should get.

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