Aero Precision M4E1 Mid-Length Complete Upper – 16″ 5.56


Aero Precision M4E1 Mid-Length Complete Upper – 16″ 5.56


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SKU: APPG600231P7
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M4E1 Mid-Length Complete Upper – 16″ 5.56

Manufactured and Assembled in the USA by Aero Precision

This Mid-Length Complete Upper Receiver Handguard Combo now 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.

Does not include Bold Carrier Group or Charging Handle


M4E1 Upper Receiver

  • 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)
  • Fully Assembled with ejection port cover and forward assist
  • Accepts Standard AR15/M16 components
  • Handguard mounting platform forged into the receiver
  • Works with Aero Precision handguards but also fits most BAR-system handguards
  • Barrel nut and wrench included

Gen 2 Enhanced Handguard Features

  • 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
  • Gen 2 Features –
    • ?Quick disconnect sling socket at the 3, 6 and 9 o?clock positions
    • ?Additional milling along flats to aid with gripping and add visual appeal
    • ?New profile for the continuous picatinny top rail

16″ 5.56 Mid-Length Barrel Features

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

Technical Information

Item#: APPG600231P7
Manufacturer: Aero Precision
Barrel Length: 16″
Handguards: Gen 2
Other: Bolt Carrier Group NOT included.
MSRP: $429.99

Additional information

Weight60 oz

Aero Precision


Upper Receiver Parts




CPQ Corrosion Resistance




5.56 NATO


4150 Chrome Moly Vanadium




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