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Aero Precision AR15 M4E1 Enhanced Upper Receiver – Anodized Black


Availability: 9 in stock

SKU: APAR600201AC Categories: , , , , , Tags: , ,

Aero Precision AR15 M4E1 Enhanced Upper Receiver – Anodized Black


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 superior engineering, 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″


  • AR15 M4E1 Upper Receiver in Anodized Black
  • Port Door and Forward Assist installed
  • Barrel nut
  • Barrel nut wrench


  • Made In America? Yes
    Platform AR15
    Material Machined from 7075-T6 forged aluminum
    Select Your Finish Anodized Black
    Compatibility Works with standard AR15/M16 components
    Weight(s) 12.4 oz
    Other Barrel Nut Torque – 55 ft-lbs
  • Aero Precision AR15 M4E1 Enhanced Upper Receiver – Anodized Black