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Aero Precision M4E1 Complete Upper, 18″ .223 Wylde SS QPQ Rifle Length

SKU: APAR600251Q73

Original price was: $559.99.Current price is: $428.39.

In stock

In Stock


This Complete Upper includes the Gen 2 Enhanced Handguard!

Key features include the addition of quick disconnect sling sockets, enhanced milling design for grip & visual appeal & a new profile for the picatinny top rail.


  • M4E1 Enhanced Upper Receiver
  • 15″ Enhanced M-LOK Handguard
  • 18″ .223 Wylde Stainless Steel QPQ Barrel, Rifle-Length
  • Low-Profile Gas Block & Rifle-Length Gas Tube
  • A2 Flash Hider
  • Product comes assembled
  • This complete upper does not include BCG nor Charging Handle.

M4E1 Upper Receiver Features:

  • Forged from 7075 T6 aluminum
  • Precision machined to M4E1 specs
  • M4 feedramps
  • Matte black hard coat Anodized Black Mil 8625 Type 3 Class 2
  • Laser engraved T-marks
  • Comes assembled, with port door & 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 & 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 & 1.5″ suppressors
  • Compatible with low-profile gas blocks
  • Gen 2 Feature – Quick disconnect sling socket at the 3, 6 & 9 o’clock positions
  • Gen 2 Feature – Additional milling along flats to aid with gripping & add visual appeal
  • Gen 2 Feature – New profile for the continuous picatinny top rail

18″ .223 Wylde Stainless Steel QPQ Barrel, Mid-Length Features:

  • .223 Wylde 18″ Mid Length Barrel, 1/8 Twist
  • QPQ Corrosion Resistant Finish
  • .750 gas block journal
  • Rifle-length gas system
  • M4 Feed Ramp Extension
  • HP & MPI tested
  • Standard A2 flash hider

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