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

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

The Aero Precision M4E1-T Complete Upper, 12.5″ 5.56 Mid-Length Gov Profile Barrel, 11.4″ MOD 4 Handguard – Black is designed for shooters who need a compact and agile upper for CQB or SBR builds, the Aero Precision M4E1 Complete Upper with 12.5″ 5.56 barrel and 11.4″ MOD 4 Handguard provides top-tier components in a ready-to-install configuration. This assembly is ideal for those building a suppressed or close-quarters rifle platform.

The 12.5″ barrel is constructed from 4150 Chrome Moly Vanadium steel with a QPQ Nitride finish, ensuring corrosion resistance and longevity in harsh environments. It features a 1:7 twist rate for optimal stabilization of heavier projectiles, including 62gr M855 and other match-grade options. The carbine gas system maintains reliability with suppressed and unsuppressed use.

The 11.4″ MOD 4 Handguard features a full-length top Picatinny rail and M-LOK slots for customizable accessory mounting. Whether used with a compact weapon light, hand stop, or sling attachment, this handguard delivers reliable performance with a rigid, free-floating design. Its slim profile enhances handling, and the durable construction keeps zero consistent through demanding conditions.

The enhanced M4E1 upper receiver is machined from 7075-T6 aluminum and finished in Type III hardcoat anodize. It comes with the port door and forward assist already installed. The M4 Feed Ramp Extension ensures feeding reliability with varied ammo types. The 1/2×28 threaded muzzle accommodates standard brakes and suppressor mounts. An 11° recessed crown preserves rifling and accuracy.

Fully compatible with AR15-pattern lower receivers, this upper is perfect for builders focused on compact setups that maintain full-size performance capabilities.