M5E1 Enhanced Upper Receiver - FDE Cerakote

Aero Precision M5E1 Enhanced Upper Receiver - FDE Cerakote

M5E1 Enhanced Upper Receiver - FDE Cerakote Product Sku: APAR308506AC

Our state of the art M5E1 platform starts here, with the M5E1 Upper Receiver. The M5E1 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 M5E1 upper, tighten it using the included barrel nut and slide your rail on and tighten the rail screws. Within minutes you have a modular, free-floated rail.


  • M4 Feedramps
  • .2795 takedown pin holes
  • Lazer engraved T-marks
  • Comes assembled, with dust cover and forward assist installed

M5E1 Specific Details:

  • Handguard mounting platform is forged into the receiver
  • Works with Aero Precision M5 Enhanced Handguards
  • Barrel nut included
  • Torque to 65 ft. lbs. with a standard AR15 Armorer’s Wrench


  • M5E1 Upper Receiver in FDE Cerakote
  • Port Door and Forward Assist installed
  • Barrel Nut

Please Note - - The M5E1 Upper Receiver is specifically designed to be used with our M5 Enhanced Handguards. It will not work with other AR10/308 handguards.

Made In America? Yes
Platform M5
Material Machined from 7075-T6 forged aluminum
Finish Magpul™ FDE Cerakote
Compatibility Accepts standard DPMS .308 components
Weight(s) 18.22
Other Barrel Nut Torque - 65 ft-lbs

Customer Reviews

1 Item(s)

The Best Upper Review by Derrick
I have 2 M4E1 and 1 M5E1 with different length K-Mod hand-guards. The barrels are medium 20"+ comp and and shoot 1/2 MOA and better because of the enhanced system strength and quality Aero machining.
3 different calibers tell the tale. M4 = 50 ft lbs and M5 = 65 ft lbs. My M5 is a 338 Federal and the enhanced takes the beating. (Posted on 9/10/2017)

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