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Aero Precision M4E1 10.5" 5.56 Complete Upper SM9.2 - NO FA - NO BCG/CH

Aero Precision M4E1 10.5" 5.56 Complete Upper SM9.2 - NO FA - NO BCG/CH
Availability: In stock

This complete upper receiver features the same tried-and-true construction and aesthetics as Aero's M4E1 Threaded Upper Receivers, without provisions for a forward assist. The included ATLAS R-ONE Handguard is designed with size and weight in mind, while still providing plenty of real-estate to accommodate any attachment needs the end user may have. Aero's proprietary ATLAS attachment system is a durable and dependable mounting platform, maintaining a slim profile while still providing the strength and stability customers have grown to love from Aero Precision handguards.


  • M4E1 Threaded Upper Receiver, No Forward Assist
  • 9.2" ATLAS R-ONE Handguard
  • 10.5" 5.56 CMV Barrel
  • Low Profile Gas Block and Carbine Length Gas Tube
  • Port Door Assembly
  • A2 Flash Hider

M4E1 Threaded, No Forward Assist Upper Receiver Features:

  • No Forward Assist
  • Custom enhanced forging that gives the upper receiver a "billet look" while maintaining the structural integrity of a forged part.
  • Picatinny profile that blends seamlessly with Aero's Enhanced and ATLAS Series Handguards
  • M4 Feedramps
  • .250 takedown pin holes

ATLAS R-ONE Handguard Features:

  • Partial picatinny rail for optional attachments
  • Quick disconnect sling socket at the 3, 6 and 9 o'clock positions
  • 1.3" Inside diameter
  • 1.5" Outside diameter
  • Compatible with mil-spec AR15 upper receivers and barrels
  • MLOK attachment points

10.5" 5.56 Barrel Features:

  • 5.56 NATO 10.5" Barrel, 1/7 twist, 4150 CrMoV, QPQ, gas port drilled
  • .750 gas block journal
  • Carbine length gas system, .0785 gas port
  • M4 Feed Ramp Extension
  • HP and MPI tested
  • Standard A2 flash hider
More Information
ManufacturerAero Precision
Caliber.223 / 5.56
Barrel Length (in)10.5"
Accessory RailNot Applicable
WarrantyWarranty provided by product manufacturer.
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