Aero Precision M4E1 Threaded Assembled Upper Receivers

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Aero Precision M4E1 Threaded Assembled Upper Receivers

Aero Precision created a new forged receiver with the M4E1 Threaded Upper Receiver.  Featuring a new angular machined design that helps it stand apart from standard mil-spec upper receivers, the M4E1 also uses a threaded set screw for retaining the forward assist.  This makes assembly much easier than trying to drive a roll pin without all the proper tooling.  A great upper for builders.

Threaded to accept a standard AR15 barrel nut, and forged from 7075-T6 Aluminum and precision machined to work with all mil-spec AR15 parts.  Available in Anodized Black or Flat Dark Earth Cerakote finish.

Pair with an AR Gas Vent or Forward Assist, and a Port Door / Ejection Port.


  • Material:  7075-T6 Forged Aluminum
  • Weight:  6.9oz
  • Recommended Barrel Nut Torque:  50 ft-lbs
  • New enhanced forging that gives the upper receiver a "billet look"
  • New picatinny profile that blends seamlessly with our Enhanced and ATLAS Series Handguards
  • M4 Feedramps
  • .250 takedown pin holes
  • Lazer engraved T-marks
  • Includes port door and forward assist
More Information
Dangerous GoodsYes
Shipping RestrictionITAR/Export Restricted
Upper BCG and Charging HandleNot Included
Upper Receiver - Stripped or CompleteStripped
Upper Receiver OperationN/A
Weapon ModelAR-15/M-16
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