Aero Precision M4E1 Assembled Upper Receiver – AR-15, Enhanced Forged Design, Forward Assist & Port Door Installed, Black Anodized

Modernize your AR-15 build with the Aero Precision M4E1 Assembled Upper Receiver — a cutting-edge design that blends the strength of forging with the aesthetics of billet. Built from 7075-T6 aluminum, the M4E1 upper features an integrated handguard mounting system, eliminating the need for a separate barrel nut and simplifying assembly.

This assembled version includes the forward assist and port door pre-installed, making it the perfect time-saving solution for builders who want strength, ease of installation, and a seamless look.

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 and precision machined to work with all mil-spec AR15 parts.

⚙️ Key Features:

• Receiver Type: Assembled Upper Receiver

• Material: 7075-T6 Forged Aluminum – Enhanced forging for superior strength

• Finish: Type III Class 2 Hardcoat Anodized – Matte black

• Design: Billet-style appearance with the ease of forging

• Forward Assist & Port Door: Pre-installed for convenience

• Handguard Interface: Barrel nut is integrated for Aero Enhanced Handguards

• Top Rail: Flat-Top Picatinny – Ready for optics and accessories

• Compatibility: Works with all standard AR-15 lowers and Aero Precision Enhanced M-LOK Handguards

• Caliber Compatibility: Multi-Cal (.223/5.56, .300 BLK, etc.)

• Made in the USA

The M4E1 upper is ideal for modern AR builders looking to streamline installation while upgrading strength, aesthetics, and performance.

FAQ:

Q: Can I use any AR-15 handguard with the M4E1 upper?
A: The M4E1 upper is specifically designed to work with Aero Precision Enhanced Handguards, which mount directly to the integrated barrel nut system.

Q: Is the forward assist and port door already installed?
A: Yes — this is an assembled upper, so those parts come pre-installed, saving you time and tools.

Q: Is it compatible with standard AR-15 lowers?
A: Absolutely — the M4E1 upper works with all mil-spec AR-15 lowers.

Also Available:

Radian Model 1 Complete AR-15 Upper – 10.5″ .223 Wylde Threaded Barrel, Black Cerakote, M-LOK, Includes BCG & Raptor Charging Handle

Del-Ton Complete AR-15 Upper Receiver – .223/5.56 NATO, 16″ Heavy Barrel, Flat Top, A2 Flash Hider, Mil-Spec Forged Upper

Angstadt Arms UDP-9 Complete Upper – 9mm, 6 Barrel, Threaded, Includes 9mm BCG & Charging Handle, Black Finish

Faxon ARAK-21 Complete Upper – 5.56 NATO, 16″ Barrel, Monolithic Billet Upper, Ambidextrous Ejection, Bolt Carrier Assembly Included

Aero Precision AR-15 XL Assembled Upper Receiver – Mil-Spec, Forward Assist & Port Door Installed, 7075-T6 Aluminum, Black Anodized

Aero Precision AR-15 XL Stripped Upper Receiver – Mil-Spec, 7075-T6 Forged Aluminum, Black Anodized, M4 Feed Ramps