Aero Precision M4E1-T Complete Upper, 11.5" 5.56 Mid-Length Gov Profile Barrel, 10.6" MOD 4 Handguard | Black

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

Compact, Professional-Grade Upper for Tactical Builds

The Aero Precision M4E1-T Complete Upper is a compact and durable upper assembly designed for short-barreled rifles and AR pistols. Combining premium materials and precision machining, this setup delivers exceptional handling, smooth operation, and professional-level performance in a streamlined configuration.

High-Performance 11.5″ Barrel

The 11.5-inch 4150 Chrome Moly Vanadium barrel is treated with a QPQ Nitride finish, providing outstanding resistance to corrosion, heat, and wear. Its 1:7 twist rate stabilizes a wide range of 5.56 NATO projectiles—especially heavier loads—ensuring dependable accuracy from close-quarters to mid-range distances. The carbine-length gas system maintains smooth cycling and reliable function in every environment.

10.6″ MOD 4 Handguard and Mounting Options

Featuring a 10.6-inch MOD 4 free-floating handguard, this upper offers a lightweight yet rigid platform with full M-LOK compatibility. Slots along all sides allow secure mounting of lights, grips, or other mission-critical accessories, while the top Picatinny rail provides ample space for optics or backup iron sights. The free-float design enhances barrel harmonics and accuracy consistency.

Precision Receiver and Construction

The M4E1 upper receiver is machined from 7075-T6 aluminum and finished with a Type III hardcoat anodize for long-term durability. It includes a forward assist, port door assembly, and M4 Feed Ramp Extension for reliable feeding during rapid strings of fire. The 1/2×28 threaded muzzle supports standard flash hiders, brakes, and suppressors, while the 11° target crown protects the bore and improves accuracy retention over time.

Compatibility and Applications

Fully compatible with all mil-spec AR15 lowers and components, this upper is an ideal foundation for tactical, law enforcement, or personal defense builds. Its short, maneuverable profile offers superior control and speed in confined environments while maintaining Aero Precision’s hallmark machining quality.

Key Specifications:

• Barrel: 11.5″ 4150 CMV steel, QPQ Nitride finish
• Twist Rate: 1:7
• Gas System: Carbine length
• Receiver: 7075-T6 aluminum, Type III hardcoat anodized
• Handguard: 10.6″ MOD 4 free-float, full M-LOK compatibility
• Muzzle Threads: 1/2×28 with 11° target crown
• Feed Ramps: M4 extension
• Compatibility: Standard mil-spec AR15 lower receivers