M4E1 Enhanced 7.5" 5.56 Pistol Length Complete Upper Receiver

Aero Precision 7.5" 5.56 Pistol Length Complete Uppers

M4E1 Enhanced 7.5" 5.56 Pistol Length Complete Upper Receiver Product Sku: APPG600211P0

This Complete Upper includes our 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.


  • M4E1 Enhanced Assembled Upper Receiver
  • Enhanced Handguard of choice
  • 7.5" 5.56 Pistol Length CMV Barrel
  • Low Profile Gas Block and Pistol 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
  • The muzzle brake that comes with this complete upper receiver is NOT pinned nor welded to this barrel. Per the National Firearms Act, the muzzle brake MUST be pinned and welded to achieve the necessary 16" as defined by the ATF for a rifle build.

M4E1 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

7.5" 5.56 Pistol Length Barrel Features:

  • Chamber: 5.56
  • Length: 7.5"
  • Twist: 1 in 7
  • Threading: 1/2"x28
  • Material: Chrome Moly Vanadium
  • Finish: QPQ corrosion resistant finish both inside and out
  • Gas Block: .750
  • Gas System Length: Pistol
  • Weight: 17.25oz
  • M4 Barrel Extension
  • HP and MPI Tested
Made In America? Yes
Platform AR15
Series M4E1
Caliber 5.56 NATO
Barrel Length 7.5"
Weight(s) KeyMod: 38.72 oz / M-LOK: 38.72 oz / Quad Rail: 40.32 oz
Other No

Customer Reviews

6 Item(s)

Wow!!! Sweet upper Review by michael
I am very very picky when it comes to my Ar's
This upper is very well built..Love the way the rail mounts to upper...seems rock solid..all my furture builds will be with Aero Precision...Top Quality...well worth the price...perfect fit on my lower with no wobble...Very well Pleased!!! (Posted on 7/3/2017)
Excellent Product Review by RALPH
This is my first but not last AP product I buy. The upper fit and finish are perfect. I mated the upper with an AP lower and AP Nickel Boron BCG. All preformed flawless. I am very happy with the performance and quality. (Posted on 6/8/2017)
Awesome product Review by Alex
Perfect (Posted on 4/6/2017)
very impressed Review by Ricardo
its perfect (Posted on 12/20/2016)
Top Choice for 7.5" 5.56 uppers!!!! Review by Shayne
All of AP's enhanced uppers are top notch. I own this one its on my AP lower sbr and it is a performer period.
(Posted on 10/15/2016)
Performs! Review by Jimmy
I bought this about 1.5 years ago for a pistol build and have put several hundred rounds through it. I used an AP Nib BCG and it has never failed me. Very impressed with the quality and value of this pkg. (Posted on 7/7/2016)

6 Item(s)

Write Your Own Review

Only registered users can write reviews. Please, log in or register

Finish Your Build