Aero Precision M4E1 Threaded Complete Upper, 16" .300 Blackout Barrel, ATLAS R-ONE 15" M-LOK HG - Anodized - APAR700705M14

The Aero Precision AR-15 barreled upper receiver is built around the M4E1 Threaded upper receiver designed for use with standard barrel nut setups. The receiver is forged from 7075-T6 aluminum and precision machined to M4E1 specs to ensure proper fit with Mil-Spec and aftermarket parts. It is matte black hardcoat anodized and features laser engraved T-marks. This 16″ .300 Blackout barreled upper comes with the Atlas R-One M-LOK free float handguard with a full length picatinny top rail and a slim 1.3″ inner diameter.

Features:

• 16″ .300 Blackout
• 4150 Chrome Moly Vanadium barrel
• HPT and MPI
• Black Nitride finish
• 1:7 twist rate
• Pistol length gas system
• M4E1 Threaded forged 7075-T6 upper
• Hardcoat anodized
• Laser engraved T-marks
• Scalloped picatinny top rail
• Built in anti-rotation tabs
• M-LOK slots
• Does not include BCG or charging handle

Specifications:

• Assembly: Barreled Assemblies
• Barrel Coating: Salt Bath Nitride
• Barrel Contour: Medium
• Barrel Length: 16
• Barrel Lining: Salt Bath Nitride
• Barrel Material: 41V50 Chrome Moly Vanadium Steel
• Caliber Gauge: 300 Blackout
• Gas System Length: Pistol
• Gas System Type: Direct Impingement
• Handguard: 15 in Aero Precision ATLAS R-ONE M-LOK Rail
• Muzzle Device: A2 Flash Hider
• Thread Pattern: 5/8 X 24
• Twist Rate: 1:7

The .300 BLK 16” barrel is machined from 4150 CMV steel with a salt bath Nitride finish, a rifle length gas system, and a 1:7 twist rate. It has an M4 feed ramp barrel extension and is magnetic particle inspected as well as high pressure tested. A standard A2 flash hider with 5/8×24 threading is attached to the muzzle.

Aero Precision takes some of the most state-of-the-art manufacturing techniques and equipment derived from their work in the aerospace industry and applies it to their products in the firearms industry. They have utilized their knowledge from years of building aircraft components to design and engineer AR-15 handguards, receiver sets, scope mounts, and more. They treat every product as if it were a precision flying machine and adhere to strict quality standards to ensure law enforcement, military, and civilian customers receive a product they can rely on.