Aero Precision M4E1 Threaded Complete Upper, 10.5” 5.56 Carbine Barrel, 9.3” S-ONE M-LOK Handguard

Overview

The Aero Precision M4E1 Threaded Complete Upper features a 10.5” 5.56 barrel and comes equipped with the lightweight S-ONE M-LOK Handguard, designed for shooters who demand a slim, durable, and dependable platform. Precision-machined with Aero’s billet-look forging, this upper receiver offers exceptional strength while keeping weight to a minimum. Assembled and ready to install, this upper is the perfect foundation for a compact AR build.

Key Features

• M4E1 Threaded Assembled Upper Receiver with billet-style forging
• 10.5” 5.56 NATO barrel with carbine-length gas system
• 9.3” S-ONE M-LOK Handguard with slim, lightweight design
• Includes low-profile gas block and carbine-length gas tube
• Forward assist and port door installed
• Fully assembled for convenience
• Does not include BCG or charging handle

Specifications

• Manufacturer: Aero Precision
• Model: M4E1 Complete Upper
• Caliber: 5.56 NATO
• Barrel Length: 10.5”
• Gas System: Carbine-length
• Handguard: 9.3” S-ONE M-LOK
• Receiver: M4E1 Threaded Forged Upper
• Features: M4 feed ramps, laser-engraved T-marks, billet-look forging
• Handguard ID/OD: 1.3” / 1.5”
• Sling Mounts: Integrated QD sockets at 3, 6, and 9 o’clock positions
• Rail: Picatinny sections at front and rear
• Compatibility: Mil-Spec AR-15 upper receivers and barrels
• Assembly: Complete (no BCG or charging handle included)

Applications

Ideal for AR-15 pistol or SBR builds, the Aero Precision M4E1 Complete Upper with S-ONE Handguard provides a lightweight, durable, and reliable solution for tactical use, training, or personal defense.