MPN: APAR700201AC / APAR700201C / APAR700202AC / APAR700202C / APAR700207AC / APAR700272AC


  • M4 style feed ramps
  • 0.250 takedown pin holes
  • Laser engrave T-marks
  • New enhanced forging that gives the upper receiver a "billet look"
  • Threaded version of the M4E1 upper, which does not come with the build-in barrel nut - give you more options for handguards
  • New Picatinny profile that blends seamlessly with Aero Precision Enhanced and ATLAS Series Handguards
  • Compatible with all Mil-Spec AR-15 components


  • Material: 7075-T6 Aluminum
  • Weight: 8.65 oz.
  • Finish: Mil-Spec Type III Class 2 Hardcoat Anodized or Cerakoted Flat Dark Earth, OD Green, Sniper Grey


  • AR-15 lower receiver

*Might not be compatible with handguard that has built-in anti-rotation tabs


When it’s time to choose an AR15 upper receiver for your next build there is a market rich with potential candidates. Aero Precision designs and manufactures some of the best components the small arms community has to offer, so you know that an Aero Precision upper is going to be the cream of the crop. With the advent of the Aero Precision M4E1 Enhanced Upper Receiver, Aero Precision brought to market an excellent upper that was designed to work only with their new proprietary handguard attachment system. For those of you that would like to experience the same great attention to detail, but don’t want to be tied into a proprietary system, Aero now offers the M4E1 Threaded Upper Receiver. It has all of the great qualities of the Enhanced version, but this Aero upper plays well with others.

Aero M4E1 Upper for Your Custom AR Build: No Strings Attached

Marry it with any barrel, or forend you like, the Aero Precision M4E1 Threaded Upper Receiver has a lot to bring to the party. The receiver body is produced from 7075-T6 aluminum using an enhanced forging process that gives the M4E1 the look of a much more expensive billet receiver. Precise machining finishes the M4E1 upper with a generous Picatinny Top Rail and threads that accept a standard AR-15 barrel nut.

Marry the Aero Precision Upper to the lower of your dreams, it accepts most proposals with very little fuss. There’s no need to go hunting for a dust cover or lament the absence of a forward assist, the Aero upper comes with both installed as standard components. This Aero Precision Upper features M4 feed ramps so you know it’ll feed right cycle after cycle.

A Great Upper: No Surprises

The Aero M4E1 is the AR15 upper receiver for your next build, wherever your preferences in other parts lie. The sleek black anodized finish matches your Mil-Spec blacks flawlessly. Takedown pin holes are .250 and T-marks are laser engraved. Aero Precision didn’t skimp on this one. The Aero Enhanced Threaded Receiver lets you have the full buffet at your disposal and offers up dessert too.

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