Aero Precision M4E1 Enhanced Upper Receiver - Anodized Black

SKU# 2452 | by Aero Precision
3   |  
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Our state of the art M4E1 platform starts here, with the M4E1 Upper Receiver. The M4E1 upper receiver is a one-piece design combining the handguard mounting platform with the upper itself. Through superiorengineering, we have condensed the parts needed to mount a free-floated handguard to a mere 8 Screws Since the handguard mounting surface and upper are of the same forging, not only is it a stronger system, but we are able to make additional lightening cuts to save weight and allow for more efficient cooling.

Ease of installation - Simply insert your barrel assembly into the M4E1 upper, tighten it using the provided barrel nut and wrench, slide your rail on and tighten the rail Screws Within minutes you have a modular, free-floated rail.


  • M4 Feedramps
  • .250 takedown pin holes
  • Lazer engraved T-marks
  • Comes assembled, with dust cover and forward assist installed

M4E1 Specific Details:

  • Handguard mounting platform is forged into the receiver
  • Compatible with Aero Precision Enhanced and Quantum Series handguards but also fits most BAR-system handguards
  • Barrel nut and wrench are included
  • These uppers are not piston-kit compatible
  • Will support barrels with a diameter up to 1"


  • AR-15 M4E1 Upper Receiver in Anodized Black
  • Port Door and Forward Assist installed
  • Barrel nut
  • Barrel nut wrench

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Brian F.
United States


Good products, great price! Fast shipping!! Will be doing more business with them.

Jonathan R.
United States

Aero enhanced upper

Pretty solid build along with aero handguard. Simple sturdy design. Also, the shipping is awesome with these guys. I literally bought the aero handguard from the Aero Percision website at the same time as the upper from AR15discounts. I got the upper within 4 days and then decided to order a charging handle from AR15discounts again, I then got that Within 4 days. I did all this before even receiving the handguard from Aero.

Miguel G.
United States

Cheaper than other sites and all the same quality

Super easy and fast shipping.

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