Aero Precision M4E1-T Complete Upper, 12.5" 5.56 Mid-Length Gov Profile Barrel, 11.4" MOD 4 Handguard - Kodiak Brown Anodized

Aero Precision M4E1-T Complete Upper, 12.5″ 5.56 Mid-Length Gov Profile Barrel, 11.4″ MOD 4 Handguard – Kodiak Brown

Aero Precision M4E1-T Complete Upper, 12.5″ 5.56 Mid-Length Gov Profile Barrel, 11.4″ MOD 4 Handguard – Kodiak Brown is a premium upper assembly designed for AR-15 enthusiasts seeking a balance of performance, durability, and aesthetics. This complete upper combines precision machining with thoughtful design features to deliver exceptional functionality and a distinctive finish.

Upper Receiver: The foundation of this assembly is the M4E1 Threaded Assembled Upper Receiver, which features an enhanced forging that provides a billet-like appearance while maintaining the strength of a forged component. It includes M4 feed ramps, .250 takedown pin holes, and laser-engraved T-marks. The receiver comes pre-installed with a port door and forward assist, ensuring readiness out of the box.

Barrel: The 12.5-inch 5.56 NATO barrel is constructed with a government profile and a QPQ (Quench-Polish-Quench) finish for enhanced corrosion resistance and longevity. It features a 1:7 twist rate, M4 feed ramp extension, and a .750-inch gas block journal. The carbine-length gas system ensures reliable cycling, and the barrel is both HP and MPI tested for quality assurance. A standard A2 flash hider is included. Note: The muzzle device is not pinned or welded; per the National Firearms Act, it must be pinned and welded to achieve the necessary 16″ overall length for a rifle build.

Handguard: The included 11.4-inch MOD 4 Handguard is machined from 6061-T6 aluminum, emphasizing stiffness to reduce deflection under load. Its 7-sided M-LOK interface allows for versatile accessory attachment, and the full-length Picatinny top rail provides additional mounting options. The handguard features four QD sling sockets with steel liners at the 3, 6, and 9 o’clock positions, ensuring durability with repeated use. It attaches to the upper receiver via a steel barrel nut, minimizing point-of-impact shifts when using infrared laser aiming devices.

Finish: The entire assembly boasts a Kodiak Brown anodized finish, offering a unique aesthetic while providing additional surface protection.

Specifications:

• Platform: AR15
• Caliber: 5.56 NATO
• Barrel Length: 12.5 inches
• Gas System: Carbine-Length
• Handguard Length: 11.4 inches
• Finish: Kodiak Brown Anodized
• Made in the USA

This complete upper assembly is ideal for builders seeking a compact, reliable, and visually distinctive upper for their AR-15 platform. Please note that it does not include a bolt carrier group or charging handle.