Aero Precision 16" M4E1 5.56 Mid-Length Complete Upper Assembly

Aero Precision 16" M4E1 5.56 Mid-Length Complete Upper Assembly

Product Code:
Calculated at Checkout

MPN: APAR700304M7 / APAR700305M7 / APAR700704M7 / APAR700705M7


  • Caliber: 5.56 NATO
  • Finish: Type III Class 2 Hardcoat Anodized Finish
  • Upper Receiver: Aero Precision M4E1 Threaded Enhanced Upper - 7075-T6 Aluminum
  • Handguard: ATLAS S-ONE or R-ONE Handguard of choice
  • M4 Feed Ramps: Yes
  • Muzzle Device: A2 Flash Hider
  • Barrel: 16" 1:7 QPQ Coated 4150 Crome Moly Vanadium Barrel
  • Muzzle Thread Pattern: 1/2"-28 TPI
  • Gas Block: Aero .750" Low-Profile Gas Block
  • Gas Tube: Mid-Length Gas tube
  • Bolt Carrier Group: Not Included
  • Charging Handle: Not Included

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


  • Weight:
    • M4E1 Upper with 12" Handguard: 3.26 lbs.
    • M4E1 Upper with 15" Handguard: 3.31 lbs.
  • Length: 24.33"


  • AR-15 lower receiver


  • 1x Aero Precision 16" M4E1 5.56 Mid-Length Complete Upper Assembly


This Aero Precision AR-15 complete upper assembly is designed to withstand the rigors of combat while at same time providing unmatched quality. Life can be harsh at times. You may find yourself in a situation where your only hope of escape is your AR15. Don’t risk your life or the lives of your loved ones by settling for cheap rifle parts when building your AR.

This upper receiver assembly is machined from 7075-T6 aluminum to meet the rigorous standards set in place by Aero. These standards are so rigorous that they far surpass all military requirements for the same product. The seamless receiver and ATLAS S-ONE top handguard rails offer an extremely solid base for optimal receiver performance and maximum accessory options.

This AR-15 barreled upper assembly by Aero Precision include a 4150 CrMoV steel barrel chambered in 5.56 NATO. Bolt carrier group and charging handle are not included in this Aero Precision upper assembly, so you can choose the parts that suit you the best. Order your complete upper today to make your dream rifle the best it can be.

NOTE: For the protection of our customers and various safety and legal liability reasons, we do not accept returns on ammunition, firearms, barrels, or any product that contains a barrel. Defective firearms, barrels, any product that contains a barrel (i.e., complete AR-15 uppers, complete pistol slides, etc.) and ammunition must be returned to the original manufacturer for warranty service. You can have peace of mind that all firearms, barrels, complete uppers, and ammunition that we sell are brand new from the manufacturer, and have never been used, installed, or modified.

Write a Review

4 Reviews

  • Upper receiver

    Posted by William Becker on 6th Jul 2020

    Quality gear. It’s amazing

  • 16” 5.56 aero precision upper

    Posted by Chris Aguilar on 5th Jul 2020

    Shipping was fast and upper was in awesome shape cycles and shoots exceptionally well is a number one in my book only thing missing was tool to remove and replace hand guard

  • m4 upper

    Posted by Jay on 2nd Jul 2020

    Build quality is high, price incredibly fair. Shipped same day as purchase. 10/10 would purchase again.

  • Aero completed upper

    Posted by Jacob K. on 30th Jun 2020

    Amazing product, super light weight, m lock atlas s handguard milled perfect. Checked torque on arrival and everything was tight. Slapped complete upper on an M4E1 assembled lower and ran 300 rounds without issue!

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