MPN: APAR700302M2 / APAR700702M2


  • Caliber: 5.56 NATO
  • Finish: Type III Class 2 Hardcoat Anodized or Cerakoted Flat Dark Earth
  • Upper Receiver: Aero Precision M4E1 Threaded Upper - 7075-T6 Aluminum
  • Handguard: 9.3-Inch ATLAS S-ONE or R-ONE M-LOK Handguard
  • M4 Feed Ramps: Yes
  • Muzzle Device: A2 Flash Hider
  • Barrel: 10.5" 1:7 QPQ Coated 4150 Chrome Moly Vanadium Barrel
  • Muzzle Thread Pattern: 1/2"-28 TPI
  • Gas Block: Aero .750" Low-Profile Gas Block
  • Gas Tube: Carbine Length Gas tube
  • Bolt Carrier Group: Not Included
  • Charging Handle: Not Included
  • HP and MPI Tested

*This upper assembly does not come with Bolt Carrier Group and Charging Handle

*ATLAS S-ONE Handguard: Front and rear picatinny rail section. Eliminated center of top rail for weight reduction.

*ATLAS R-ONE Handguard: Full top picatinny rail

*This upper receiver assembly has a barrel that is shorter than 16". This upper is only for use on AR pistol lower receivers and NFA registered Short-Barreled Rifle (SBR) lower receivers. All NFA laws apply!


  • Weight: ~2.49 lbs.
  • Length: ~18.95"


  • AR-15 lower receiver


  • 1x Aero Precision 10.5" M4E1 5.56 Complete Upper Assembly


The Aero Precision 10.5" AR upper is an ideal choice for shooters who value durability and tactical versatility.

Better Shooting Experience

This 10.5" upper includes the Aero Precision ATLAS Handguard, which provides tactical benefits such as a slim profile and a low weight design that maintains durability without adding excessive weight to your weapon.

Utilize the handguard's top Picatinny rails to mount your accessories of choice to provide a more customized shooting experience.

Improve your grip with the 12 O'clock located indexing grooves. Congruous with slim profile gas blocks, Mil-Spec barrels, and M4E1 upper receivers, this upper assembly offers the versatility you need to use with your parts of choice.

Notoriously Durable

Aero Precision only manufactures its products with high caliber materials, and this upper is no exception. It is made from 7075-T6 aluminum, with a barrel made of 4150 Chrome Moly Vanadium coated with QPQ, then finished with a Class 2 Type III Anodized Hard Coat, featuring enhanced forging techniques that give a "billet look". This upper is built to serve you as a part of your self-defense plan for years to come and look cool while doing it.

Aero Precision knows that you will be eager to get your new set up to the range, so this 10.5" AR upper arrives assembled. The forward assist and port door are also installed. T-marks laser engraved and .250 takedown pin holes are also featured in the design. Note that the muzzle brake is not welded or pinned to the barrel.

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  • This Item: Aero Precision 10.5" M4E1 5.56 Complete Upper Assembly
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