Features:

Caliber: .300 Blackout
Finish: Cerakote Flat Dark Earth
Upper Receiver: Aero Precision M4E1 Threaded Upper Receiver - 7075-T6 Aluminum
Handguard: 15-Inch ATLAS S-ONE M-LOK Handguard
M4 Feed Ramps: Yes
Muzzle Device: A2 Flash Hider
Barrel: 16" 1:7 QPQ Coated 4150 Chrome Moly Vanadium
Muzzle Thread Pattern: 5/8"-24
Gas Block: Aero .750" Low-Profile Gas Block
Gas Tube: Pistol-Length Gas tube
Bolt Carrier Group: Not Included
Charging Handle: Not Included
HP and MPI Tested

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

Specifications:

Weight: 3.26 lbs.
Length: ~24.38"

Compatibility:

AR-15 lower receiver

Includes:

1x Aero Precision M4E1 Flat Dark Earth 16" 300 Blackout Upper Assembly

Details:

The Aero Precision M4E1 Flat Dark Earth 16" 300 Blackout Upper Assembly is engineered for shooters who need reliability and accuracy in a versatile package. This upper comes with a 16-inch barrel crafted from 4150 Chrome Moly Vanadium, ideal for stabilizing the .300 Blackout cartridge’s range and ballistics. Paired with a pistol-length gas system, it ensures smooth cycling, even with subsonic rounds, making it perfect for suppressed setups and tactical applications.

Lightweight and Modular ATLAS S-ONE Handguard

Equipped with the ATLAS S-ONE M-LOK Handguard, this upper prioritizes a streamlined, lightweight profile without sacrificing durability. The handguard offers multiple M-LOK slots for accessories, giving you flexibility in setting up optics, lights, or grips. Its free-float design minimizes barrel contact for enhanced accuracy, and quick-disconnect points allow convenient sling attachment.

Durable and Customizable Build

Constructed from 7075-T6 aluminum and featuring a hardcoat anodized finish, the M4E1 receiver is built for tough conditions. The upper is threaded at 5/8x24, allowing compatibility with various muzzle devices. It includes an A2 flash hider, but the bolt carrier group and charging handle are optional, offering customization for your ideal build.

With this M4E1 upper, you get a quality foundation for a dependable .300 Blackout AR-15, perfect for home defense, range days, or tactical scenarios.