MPN: APAR700304M9 / APAR700305M9 /APAR700704M9 / APAR700705M9


  • Caliber: .223 Rem / 5.56 NATO
  • Chamber: .223 Wylde
  • Finish: Type III Class 2 Hardcoat Anodized Finish
  • Upper Receiver: Aero Precision M4E1 Threaded 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" 1:8 Twist 416R Stainless Steel Barrel (Government Profile) 
  • 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
  • MPI and HP 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


  • Weight:
    • M4E1 Upper with 12" Handguard: 3.25 lbs.
    • M4E1 Upper with 15" Handguard: 3.37 lbs.
  • Length: 24.4"


  • AR-15 lower receivers


  • 1x Aero Precision 16" Mid-Length .223 Wylde M4E1 Complete Upper Assembly


If you’re looking for a .223 Wylde complete upper with the accuracy of a precision rifle, your search has ended! The M4E1 16” .223 Wylde complete upper assembly by Aero Precision has everything you’re looking for in a quality upper assembly.

This 16-inch M4E1 AR upper receiver is machined from 7075-T6 aluminum for superior strength and durability. The built in anti-rotation tabs in the handguard provide extra support and to help maintain accuracy during extended shooting. The handguard itself is the Aero Precision ATLAS S-ONE handguard. The receiver and the handguard are finished in Type III hardcoat anodized matte black for optimal corrosion resistance. The handguard features QD sling sockets at 3, 6, and 9 o'clock positions for easy sling attachment. Aero's proprietary ATLAS attachment system is a durable and dependable mounting platform, maintaining a slim profile while still providing the strength and stability customers have grown to love from Aero Precision handguards.

The Aero 16” 416R steel barrel is precision-machined from a premium stainless steel blank and was given four quality inspections to ensure match-grade quality. You don’t need to worry about poor accuracy or sub-par performance when it comes to a Aero barrel! Chambered in .223 Wylde, this barrel can safely fire 5.56 NATO and .223 Remington loads. Get your Aero Precision AR-15 .223 Wylde complete upper today and give yourself an edge.

Have a question?

Ask an Expert

Reviews (4)


    Posted by Robert on 3rd Mar 2022

    Great workmanship, affordable price. Better than just a "budget" build.

  • Wylde

    Posted by Joshua on 1st Jul 2020

    Love this upper, bought two of them with the nbg bcg. No issues as of yet.

  • Aero precision 16” mid length .223 Wilde m4e1 complete upper assembly

    Posted by Steven hicks on 23rd Feb 2020

    Have not shot it yet but love the looks of it quality looks great!

Frequently Bought Together

  • This Item: Aero Precision 16" Mid-Length .223 Wylde M4E1 Complete Upper Assembly
    Choose Options
    $446.24 - $454.74

Total Price:

Add to Cart

Customers Also Viewed