M4E1COMBO-EK-FDE Aero Precision M4E1 Upper/Handguard Combo - KEYMOD - FDE
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Aero Precision M4E1 Upper/Handguard Combo - KEYMOD - FDE GEN1

Price: $379.00
SALE PRICE: $149.00
  • Item #: M4E1COMBO-EK-FDE
  • Manufacturer: Aero Precision
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Aero Precision M4E1 Enhanced Upper Receiver and Handguard Combo - Save BIG when you purchase the upper and handguard as a combo!  Aero Precision's state-of-the-art Enhanced Upper Receiver combines the handguard mounting platform with the upper itself, condensing the parts needed to mount a free-floated handguard to a mere 8 screws. Enhance your build today!


  • AR15 M4E1 Enhanced Upper Receiver - FDE Cerakote
  • Enhanced KEYMOD Handguard - FDE Cerakote (Choose length from drop down menu)
  • Handguard mounting screws
  • Barrel Nut
  • Barrel Nut Wrench


Product Details (M4E1 Enhanced Upper Receiver)

Aero Precision's 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, 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 Aero Precision is 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
  • FDE Cerakote finish
  • Machined from 7075-T6 forged aluminum
  • Works with standard AR15/M16 components
  • Weight is 10.24oz
  • Comes assembled, with dust cover and forward assist installed
  • Made in USA

M4E1 Specific Details:

  • Handguard mounting platform is forged into the receiver
  • Works with Aero Precision handguards but also fits most BAR-system handguards
  • Barrel nut and wrench are included
  • These uppers are not piston-kit compatible


  • AR15 M4E1 Upper Receiver in FDE cerakote
  • Port Door and Forward Assist installed
  • Barrel nut
  • Barrel nut wrench


Product Details (Enhanced KEYMOD Handguard)

Aero Precision's Enhanced KeyMod (EK) Handguards provides a lightweight free float design for your custom AR15 build. The KeyMod system allows advanced modularity past the current 1913 picatinny rail system. Machined to mil-spec dimensions and engineered to perfection, this handguard eliminates bulk while retaining strength and stability.


  • 1pc free float design
  • Built in anti-rotation tabs
  • Scalloped rails
  • Continuous top rail
  • 1.8" inside diameter fits most muzzle devices and 1.5" suppressors
  • Compatible with low profile gas blocks
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