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Categories -> Uppers -> M4E1 16" 5.56 Mid-Length Complete Upper Receiver
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Aero Precision M4E1 16" 5.56 Mid-Length Complete Upper Receiver
This 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.

Includes:
  • M4E1 Assembled Upper Receiver
  • Enhanced Handguard of choice
  • 16" 5.56 Mid-Length CMV Barrel
  • Low Profile Gas Block and Mid Length Gas Tube
  • Product comes assembled
  • This complete upper does not include BCG or Charging Handle.
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
  • 1.8" 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" 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
Part #
AERO APAR640231P7
Description
M4E1 Complete Upper, 16" 5.56 Mid Barrel, EK-12 HG Gen 2 - Anodized Black
Price
Our: $408.50
Retail: $430.00
You Save: $21.50
    
Part #
AERO APAR640251M7
Description
M4E1 Complete Upper, 16" 5.56 Mid Barrel, EM-15 HG Gen 2 - Anodized Black
Price
Our: $418.00
Retail: $440.00
You Save: $22.00
    
Part #
AERO APAR640231M7
Description
M4E1 Complete Upper, 16" 5.56 Mid Barrel, EM-12 HG Gen 2 - Anodized Black
Price
Our: $408.50
Retail: $430.00
You Save: $21.50
    
 
 
 
 
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