Aero Precision M4E1-T Complete Upper, 13.9" 5.56 Mid-Length Gov Profile Barrel, 12.7" MOD 4 Handguard - OD Green

SKU: APAR700013D99


$715.00

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Aero Precision M4E1 Complete Upper, 13.9″ 5.56 Mid-Length Gov Profile Barrel, 12.7″ MOD 4 Handguard – OD Green

The Aero Precision M4E1 Complete Upper with a 13.9″ 5.56 barrel and 12.7″ MOD 4 Handguard in OD Green is a builder’s favorite for creating a compact rifle that avoids NFA regulations when paired with a properly pinned and welded muzzle device. This upper delivers enhanced ergonomics and full-length rifle capability in a visually distinct anodized OD Green finish.

The 13.9″ barrel is machined from 4150 Chrome Moly Vanadium steel and finished in QPQ Nitride to increase corrosion resistance and lifespan. Its 1:7 twist rate stabilizes a wide range of 5.56 NATO bullet weights, and the carbine-length gas system ensures consistent cycling across various conditions and suppressor use.

The 12.7″ MOD 4 Handguard provides ample space for lights, grips, sling hardware, and backup sights. Its slim, free-floating profile is M-LOK compatible and includes a continuous Picatinny top rail, making it perfect for flexible setups. The length aligns neatly with the 13.9″ barrel for optimal hand placement and accessory integration.

The OD Green M4E1 upper receiver is forged from 7075-T6 aluminum and hardcoat anodized for rugged use. It includes the forward assist and port door as standard, while the Nickel Boron Coated M4 Feed Ramp Extension ensures smooth feeding under sustained use. The muzzle is threaded 1/2×28 and finished with an 11° target crown for enhanced durability.

Compatible with all standard AR15 components and lower receivers, this upper offers a compliant and optimized solution for shooters who want a shorter rifle platform without the paperwork, while maintaining full functionality and aesthetics.

Product Information

Product Type

Upper Receiver, Complete Upper

Material

4150 Chrome Moly Vanadium, 7075-T6 Aluminum

Muzzle Thread

1/2×28

Handguard

12.7" M-LOK

Series

M4E1, MOD 4

Manufacturer

Aero Precision

Platform

AR15

Color

OD Green

Finish

Anodized

Caliber

5.56 NATO

Length

13.9"

Gas System

Mid-Length

Twist Rate

1:7

Barrel Finish

QPQ Nitride

Compatibility

Standard AR15 components

Made in USA

Yes

Important!

Before MAKING your purchase, please carefully review the information below.
This part features a colored anodized finish, which is subject to different aesthetic standards than black anodizing or Cerakote finishes. By purchasing this part, you acknowledge that the actual color may vary slightly from what is displayed on our website and may also differ in shade compared to other parts with the same finish. For further details on colored anodizing, please visit our post here.

We fully comply with all federal, state, and local laws regarding the sale of restricted products. We do not market or sell to prohibited jurisdictions, and any attempts to induce illegal activity, including by law enforcement or government agencies, will be rejected and may be reported. All orders are subject to legal verification, and those in violation will be canceled. By using this site, you confirm compliance with all applicable laws.

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