Aero Precision M4E1-T Complete Upper, 16" .223 Wylde Mid SS Barrel, 15" ATLAS R-ONE MLOK HG - FDE Cerakote

SKU: APAR700715M9
Fully Assembled and Warrantied by Aero Precision

In stock

Ballistic Advantage Authorized DealerAero Precision Authorized Dealer

Aero Precision M4E1-T Complete Upper, 16″ .223 Wylde Mid SS Barrel, 15″ ATLAS R-ONE MLOK HG – FDE Cerakote

The Aero Precision Complete Upper Receiver epitomizes speed, efficiency, and dependability for fashioning a semi-custom AR15 rifle. Crafted with meticulous precision, this .223 Wylde M4E1 Threaded Complete Upper boasts a 16″ Mid-Length barrel and a 15″ ATLAS R-ONE handguard. Meticulously machined, comprehensively assembled, and subject to rigorous test-firing by skilled Aero Precision armorers, it guarantees unparalleled performance.

* Does not include Bolt Carrier Group or Charging Handle.


  • M4E1 Threaded Assembled Upper Receiver – Magpul FDE Cerakote
  • 15″ M-LOK ATLAS R-ONE Handguard – Magpul FDE Cerakote
  • 16″ .233 Wylde Stainless Steel Mid-Length Barrel
  • Low-profile Gas Block and Gas Tube
  • Standard A2 Flash Hider

M4E1 Threaded Upper Receiver Features:

  • New enhanced forging gives the upper receiver a “billet look.”
  • M4 Feed ramps
  • .250 takedown pin holes
  • Includes port door and forward assist installed

ATLAS R-ONE Handguard Features:

Aero Precision’s ATLAS attachment system is a secure and dependable mounting platform, maintaining a slim profile while still providing the strength and stability customers have grown to love from Aero Precision handguards.

  • Continuous top Picatinny rail
  • Quick disconnect sling socket at the 3, 6, and 9 o’clock positions
  • Compatible with low-profile gas blocks
  • 1.3″ Inside diameter
  • 1.5″ Outside diameter

.223 Wylde Barrel Features:

  • .223 Wylde 1/8 twist, 416R Stainless Steel, Bead Blasted Finish
  • .750 gas block journal
  • Mid-Length gas system
  • M4 Feed Ramp Extension
  • HP and MPI tested

Product Information


Aero Precision

Made in USA





223 Wylde


15" MLOK

Attachment Type


Coating Type

Magpul FDE Cerakote



Barrel Length


Gas System


Barrel Finish

Bead Blasted

Muzzle Thread



416R Stainless, 6061-T6 Aluminum


Standard AR15 components

Part Type

Upper Receiver Parts

Gas Block Diameter




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