Aero Precision M4E1 upper receiver and 9 inch MLOK free float rail.

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M4E1 enhanced upper with 9 inch enhanced MLOK rail.

This Upper Receiver Handguard Combo includes an Aero Precision Gen 2 Enhanced Handguard!  Key features include the addition of quick disconnect sling sockets, enhanced milling design for grip and visual appeal and a new profile for the picatinny top rail.


  • Aero Precision AR15 M4E1 Enhanced Upper Receiver.
  • Aero Precision Gen 2 Enhanced Handguard. 
  • Handguard mounting screws

Enhanced Upper Receiver Features:

  • M4 Feedramps
  • .250 takedown pin holes
  • Lazer engraved T-marks
  • Comes assembled, with dust cover and forward assist installed
  • Machined from 7075-T6 forged aluminum

Gen 2 Enhanced Handguard Features:

  • 1pc free float design
  • Built in anti-rotation tabs
  • Scalloped rails
  • Continuous top rail
  • 1.72" inside diameter fits most muzzle devices and 1.5" suppressors
  • Compatible with low profile gas blocks
  • Gen 2 Feature - Quick disconnect sling socket at the 3, 6 and 9 o’clock positions
  • Gen 2 Feature - Additional milling along flats to aid with gripping and add visual appeal
  • Gen 2 Feature - New profile for the continuous picatinny top rail