MPN: APAR700302M29 / APAR700703M29


  • Caliber: 5.56 NATO
  • Finish: Type III Class 2 Hardcoat Anodized Finish
  • Upper Receiver: Aero Precision M4E1 Threaded Upper - 7075-T6 Aluminum
  • Handguard: 9.3-Inch S-One or 10.3-Inch R-ONE M-LOK Handguard
  • M4 Feed Ramps: Yes
  • Muzzle Device: A2 Flash Hider
  • Barrel: 11.5" 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
  • Government Profiled

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

*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: ~2.62 lbs.
  • Length: ~19.95"


  • AR-15 lower receiver


  • 1x Aero Precision 11.5" M4E1 5.56 Complete Upper Assembly


Aero Precision makes upper assemblies for AR-15s in various profiles. If you are looking to build an AR-Pistol or SBR for personal defense or shooting at the range, the Aero Precision 11.5" M4E1 5.56 Complete Upper Assembly is an excellent option to consider.

11.5-Inch CMV Barrel

With an 11.5"-inch 4150 Chrome Moly Vanadium steel barrel, all the parts of this upper assembly are built to work perfectly with each other. The barrel has a 1:7 twist rifling, which offers excellent stabilization with a wide range of bullet weights and profiles, especially when shot out of a shorter barrel. The barrel has a 1/2"-28 thread pitch, and it comes with an A2 flash hider.

The gas system uses a carbine-length gas tube with a low-profile gas block. The carbine-length gas system works great with the 11.5" barrel and results in a smooth shooting rifle that is also very reliable even in adverse conditions or when used with a suppressor.

Lightweight Atlas Handguard

This upper assembly used a modern Atlas M-LOK Handguard designed by Aero Precision. This one-piece aluminum handguard has multiple mounting platforms, with M-LOK slots at 3, 6, and 9 o clock and Picatinny rails on top. It mounts on the receiver using an anti-rotation steel pin and can be used to mount all kinds of accessories.

The M4E1 Threaded Upper Receiver from Aero Precision is made from 7075-T6 Aluminum and is MPI and HP tested, along with the barrel, to prevent any damage to the metal. It has M4 feed ramps for feeding reliability and comes with a Hardcoat Anodized Finish

Have a question?

Ask an Expert

Frequently Bought Together

  • This Item: Aero Precision 11.5" M4E1 5.56 Complete Upper Assembly
    Choose Options
    $454.99 - $549.99

Total Price:

Add to Cart