Aero Precision 16″ 5.56 Mid-Length Complete Upper Receiver – No Forward Assist

Original price was: $519.99.Current price is: $462.93.


Product Description

This complete upper receiver features the same tried-and-true construction and aesthetics as Aero’s M4E1 Enhanced Upper Receivers, without provisions for a forward assist. The M4E1 Enhanced Upper Receiver combines the handguard mounting platform with the upper receiver itself. Aero has condensed the parts needed to mount a free-floated handguard to a mere 8 screws through superior engineering. Since the handguard mounting surface and upper are of the same forging, not only is it a stronger system but Aero adds additional lightning cuts to save weight and allow for more efficient cooling.


  • M4E1 Enhanced Upper Receiver – No Forward Assist.
  • 15″ Gen 2 Enhanced Handguard.
  • 16″ 5.56 CMV Barrel.
  • Low Profile Gas Block and Mid-Length Gas Tube.
  • Port Door Assembly.
  • A2 Flash Hider.
  • This complete upper receiver does not include BCG or Charging Handle.

M4E1 Enhanced, No Forward Assist Upper Receiver Features:

  • No Forward Assist
  • Custom enhanced forging that gives the upper receiver a “billet look” while maintaining the structural integrity of a forged part.
  • Picatinny profile that blends seamlessly with our Enhanced and ATLAS Series Handguards.
  • M4 Feedramps.
  • .250 takedown pin holes.
  • Laser engraved T-marks.

Gen 2 Enhanced Handguard Features:

  • 1-piece free float design.
  • Built-in anti-rotation tabs.
  • Scalloped rails.
  • Continuous top rail.
  • 1.78″ inside diameter.
  • Compatible with low-profile gas blocks.
  • Gen 2 Feature – Quick disconnect sling socket at the 3, 6, and 9 o’clock positions.
  • M-LOK attachment points.

16″ 5.56 Barrel Features:

  • 5.56 NATO 16″ Barrel, 1/7 twist, 4150 CrMoV, QPQ, gas port drilled.
  • .750 gas block journal.
  • Mid-length gas system, .0785 gas port.
  • M4 Feed Ramp Extension.
  • HP and MPI tested.
  • Standard A2 flash hider.




Technical Information

Firearm Compatibility


5.56 NATO / .223 Remington



Catalog Location

California Prop 65 Warning

WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information visit