Aero Precision M4E1-T Complete Upper, 11.5″ 5.56 Mid-Length Gov Profile Barrel, 10.6″ MOD 4 Handguard – OD Green

The Aero Precision M4E1-T Complete Upper, 11.5″ 5.56 Mid-Length Gov Profile Barrel, 10.6″ MOD 4 Handguard – OD Green is purpose-built for short-barreled rifle or AR pistol builds. Compact, rugged, and modular, this upper offers superior performance in confined environments while still meeting the demands of professional or defensive use.

The 4150 Chrome Moly Vanadium barrel is QPQ Nitride treated to protect against corrosion and prolong service life. Its 1:7 twist rate ensures stability with heavier bullet weights, such as 62gr green tip or 77gr match loads. A carbine-length gas system ensures reliable operation and maintains compatibility with suppressed or unsuppressed configurations.

The 10.6″ MOD 4 Handguard provides a free-floating design with M-LOK slots on all sides and a continuous Picatinny top rail. It is ergonomically contoured to enhance handling while still offering ample space for lights, hand stops, and optic mounts. The OD Green finish delivers a distinctive appearance for shooters who want more than just basic black.

The enhanced M4E1 receiver is forged from 7075-T6 aluminum and includes a factory-installed forward assist and port door. A Nickel Boron Coated M4 Feed Ramp Extension ensures smooth, consistent chambering. The barrel is threaded 1/2×28 and capped with an 11° recessed target crown to preserve accuracy and barrel life.

Fully compatible with mil-spec AR15 lower receivers, this upper is ideal for building a compact weapon system where agility, performance, and visual style matter.