M5E1 Handguard Barrel Nut

Aero Precision M5E1 Handguard Barrel Nut

M5E1 Handguard Barrel Nut Product Sku: APPG308910

The M5E1 Handguard Barrel Nut is used to connect Aero Precision M5 Enhanced Handgaurds to standard AR10 & DMPS pattern threaded upper receivers. This product comes with 5 shims to properly time the gas tube with the upper receiver.


  • M5E1 Handguard Barrel Nut
  • Shim Pack (5 shims)


  • Material: Machined from 1144 Stressproof® Steel
  • Coating: QPQ/Melonite
  • Torque to 65 ft lbs with a standard AR15 armorer's wrench

Please Note: If you intend to connect an Aero Precision Handguard to a standard threaded upper receiver, you will need a M5E1 Handguard Barrel Nut. You will need to select between an Aero/DPMS threaded barrel nut and an Armalite threaded barrel nut, depending on your upper receiver.

If you have our M5E1 Enhanced Upper Receiver, you do not need a M5E1 Handguard Barrel Nut as the barrel nut and rail mounting platform are forged directly on to the upper receiver itself.

Made In America? Yes
Platform M5
Weight(s) 5.4oz
Other Features -

Customer Reviews

1 Item(s)

Aero Precision Barrel Nut Review by Jeffrey
This barrel nut fits extremely well on the Aero 308 upper. The shim kit that comes with the nut is sufficient to handle all applications/installations. The only difficulty I had installing this barrel nut is that I had to file 1/16" off of the ejection port rod to provide sufficient clearance for the nut. I only needed to use the second largest shim to achieve a perfect fit for the gas tube to run through the nut and into the upper. Just remember that the required torque specs from Aero is 65 lbs! (Posted on 11/27/2016)

1 Item(s)

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