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aero precision 308 upper, aero enhanced upper, aero stripped upper
  • Aero Precision M5E1 Enhanced Upper Receiver


    M5E1 upper receiver is a one-piece design combining the handguard mounting platform with the upper itself. They 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 (DPMS size)
    • Laser 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
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