M4E1 Enhanced 16" .223 Wylde Fluted Complete Upper Receiver

Aero Precision M4E1 Complete Upper, 16" .223 Wylde Fluted Mid-Length Barrel

M4E1 Enhanced 16" .223 Wylde Fluted Complete Upper Receiver Product Sku: APPG640232F

This AR15 upper assembly is built on our M4E1 Enhanced Upper Receiver platform with an Enhanced Series Handguard.


  • M4E1 Enhanced Assembled Upper Receiver
  • Enhanced Handguard of choice
  • 16" .223 Wylde SS Fluted Barrel
  • Low Profile Gas Block and Mid-Length Gas Tube
  • Product comes assembled
  • This complete upper does not include BCG or Charging Handle. These products may be selected as add-ons under the Finish Your Build tab

M4E1 Enhanced Upper Features:

  • Forged from 7075 T6 aluminum
  • Precision machined to M4E1 specs
  • M4 feedramps
  • Matte black hard coat anodized Mil 8625 Type 3 Class 2
  • Laser engraved T-marks (Anodized only)
  • Comes assembled, with port door and forward assist installed
  • Accepts standard AR15/M16 components
  • 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

Gen 2 Enhanced Handguard Features:

  • 1pc free float design
  • Built in anti-rotation tabs
  • Scalloped rails
  • Continuous top rail
  • 1.78" 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

16" .223 Fluted Stainless Steel Mid-Length Barrel Features:

  • .223 Wylde 16" Mid-Length Barrel, 1/8 Twist
  • 416R Stainless Steel
  • Bead Blasted Finish
  • .750 gas block journal
  • Mid-length gas system
  • M4 Feed Ramp Extension
  • HP and MPI tested
  • Standard A2 flash hider
  • ALL NEW Fluted Design
  • Barrel Weight: 27 oz
Made In America? Yes
Platform AR15
Series M4E1
Caliber .223 Wylde
Barrel Length 16"
Weight(s) 50.34 oz (KeyMod and M-LOK)
Other N/A

Customer Reviews

1 Item(s)

Great all around Review by mario
The first thing I have to say is the customer service department here is top notch. I’ve been waiting for months for this item to be in stock. I would always seem to miss one promotion or another. Finally customer service was able to help me when item became in stock and even help me get a better item that I even was looking for. I sent them an email and got a prompt response from an amazing customer service agent .They answered my questions and helped me pick the right product.
With that said, the fit and finish of this upper is amazing. If feels so much more solid than my PSA upper. The M lock handguard has a great size and it’s easier to grab than a quad rail. So far accuracy testing Is amazing. So far only shooting at 50 yards the bullets are touching. I did a lot of research on other uppers from other companies and this seems to be the absolute best not just for the price but for anything out there in the market available today. The barrel looks amazing. The fluting is a great addition for lightweight rifle. (Posted on 3/10/2018)

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