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When you are ready to build your very own AR, the only name to trust is Aero Precision. With the M4E1 Complete Upper, you’ll have everything you need for a total and reliable build. It comes with an upper receiver forged from 7075 T6 aluminum, a 16-inch CMV carbine barrel chambered in 5.56 NATO, and a 15-inch free-float M-LOK Handguard. What else do you need? Get the best AR rifle deals online from today!

SKU: GAG_QJAPAR640105M6 Categories: ,


M4E1 Complete Upper Features

Threaded Bolt Catch Roll Pin allows for simple installation of the bolt catch and virtually eliminates the chance to damage the finish during installation (pin included). 1/16″ Hex Key required for assembly. An Integrated Trigger Guard eliminates the possibility of breaking the trigger guard tabs by integrating the trigger guard into the lower, creating a stronger more rigid platform to build upon. The Upper Tension Screw allows users to fine-tune the fit of the upper and lower receiver using a nylon tipped tensioning set screw inserted in the grip tang of the lower receiver. This provides a tight fit with any standard AR15 upper receiver. The Threaded Takedown Pin Detent Recess allows users to easily install the Takedown Pin detent and spring with the use of a 4-40 set screw (no more launching detents across the room). An Increased Magwell Flare means an increase in the flare of the magwell to aid in quick and efficient magazine changes. Marked and milled to accept short-throw safety selectors, but will work with standard selectors as well.

M4E1 Complete Upper Specifications

  • M4E1 Upper Features:
    • Forged from 7075 T6 aluminum
    • Precision machined to M4E1 specs
    • M4 feed ramps
    • Matte black hard-coat anodized Mil 8625 Type 3 Class 2
    • Laser engraved T-marks
    • 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
  • Quantum Handguard Features:
    • 1pc free float design
    • Removable 4-slot Picatinny rail section for front sight
    • Built-in anti-rotation tabs
    • 7 mounting surfaces for KeyMod accessories
    • 1.78in inside diameter fits most muzzle devices and 1.5in suppressors
    • Compatible with low profile gas blocks
  • 16in 5.56 M4 CMV Carbine Barrel Features:
    • 5.56 Nato 16in 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
Barrel Length 16
Caliber 5.56
Condition New in Box
Finish Per Color Black
Manufacturer Part Number APAR640105M6
Model M4E1 Complete Upper
Type Uppers
UPC 840014603596


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