MPN: APAR700305M39 / APAR700705M39

Features:

• Caliber: 5.56 NATO
• Finish: Type III Class 2 Hardcoat Anodized Finish
• Upper Receiver: Aero Precision M4E1 Threaded Upper - 7075-T6 Aluminum
• Handguard: ATLAS S-ONE or R-ONE Handguard of choice
• M4 Feed Ramps: Yes
• Muzzle Device: A2 Flash Hider
• Barrel: 16" 1:7 QPQ Coated 4150 Chrome Moly Vanadium Pencil Barrel
• Muzzle Thread Pattern: 1/2"-28 TPI
• Gas Block: Aero .625" Low-Profile Gas Block
• Gas Tube: Mid-Length Gas Tube
• Bolt Carrier Group: Not Included
• Charging Handle: Not Included
• HP and MPI Tested
• Pencil Profile

*This upper assembly does not come with Bolt Carrier Group and Charging Handle

*ATLAS S-ONE Handguard: Front and rear picatinny rail section. Eliminated center of top rail for weight reduction.

*ATLAS R-ONE Handguard: Full top picatinny rail

Specifications:

• Weight: ~2.93 lbs.
• Length: ~24.4"

Compatibility:

• AR-15 lower receiver

Includes:

• 1x Aero Precision 16" M4E1 5.56 Mid-Length Pencil Complete Upper

Details:

On any rifle, the weight is a significant attribute that can affect its handling, accuracy, and overall effectiveness. A lightweight rifle is more maneuverable and easy to control, and if you are looking for a light AR-15, you should check out the M4E1 5.56 Mid-Length Pencil Complete Upper Assembly by Aero Precision.

Lightweight Pencil Profile Barrel

This Upper comes with a pencil profile 16-inch barrel made from super strong and durable Chrome Moly Vanadium and is QPQ coated for strength. The barrel has a 1/2"-28 thread on the muzzle and comes equipped with a standard A2 style birdcage flash hider.

Low-Profile Design

The upper assembly is a low-profile gas block, and a mid-length gas tube to go with the 16-inch barrel. It uses a low-profile handguard, and you have the choice of either the Aero Precision ATLAS S-One or R-One handguard, both of which have M-LOK slots on the side and the bottom. The R-One has a continuous Picatinny rail on the top, whereas the S-One is the lighter option, with two small Pic rail sections for mounting iron sights.

The receiver is made from 7075-T6 Aluminum and features a forward assist and port door. The receiver has a hardcoat anodized finish and features M4 feed ramps for better reliability. The barrel on this upper assembly are HP and MPI tested to clear any minor imperfections.