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