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The M4E1 Threaded Upper Receiver features a new angular machined design that helps it stand apart from standard mil-spec upper receivers. This upper receiver features the same enhanced body profile as our M4E1 Enhanced Upper Receiver but is threaded to accept a standard AR15 barrel nut. It is forged from 7075-T6 Aluminum, precision machined to work with all mil-spec AR15 parts and includes the port door and forward assist pre-installed.

Aero Precision M4E1 Threaded Assembled Upper Receiver - Anodized Black

    • New enhanced forging that gives the upper receiver a "billet look"
    • New picatinny profile that blends seamlessly with Aero's Enhanced and ATLAS Series Handguards
    • M4 Feedramps
    • .250 takedown pin holes
    • Laser engraved T-marks
    • Includes threaded forward assist roll pin
    • Includes port door and forward assist
  • Made In America? Yes
    Platform AR15
    Material Machined from 7075-T6 forged aluminum
    Select Your Finish Kodiak Brown Anodized
    Compatibility Works with standard AR15/M16 components
    Weight(s) 8.65 oz
    Other Barrel Nut Torque - 50 ft-lbs
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