Aero Precision USA M4E1 Threaded Assembled Upper Receiver

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. 

The M4E1 Threaded Upper Receiver is designed to pair perfectly with our new M4E1 Lower Receiver, giving you a billet looking receiver set at a fraction of the billet price. 

Features: 

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 

Laser Engraved T-marks 

Includes Threaded Forward Assist Roll Pin 

Includes Port Door and Forward Assist 

M4E1 Threaded Upper Receiver in Anodized Black 

Port Door and Forward Assist Installed