AR-15 Line

300 AAC Blackout 16" Complete AR-15 Upper Assembly – Black Canon Edition | Moriarti Armaments

300 Blackout 16 Inch Complete AR-15 Upper Assembly – Black Canon Edition | Moriarti Armaments

Experience the versatility of the Moriarti 300 Blackout 16 Inch Upper, engineered for shooters seeking reliable performance, accuracy, and compatibility with standard mil-spec AR-15 lower receivers. The Black Canon Edition combines a 16-inch medium profile barrel, free-float M-LOK handguard, and quality components to deliver a dependable .300 AAC Blackout AR-15 upper for recreational shooting, hunting applications, range use, and custom builds.

Why Choose a 16 Inch 300 Blackout Upper?

A 16 inch 300 Blackout upper provides an excellent balance of velocity, accuracy, and versatility. The longer barrel helps maximize the performance of supersonic .300 AAC Blackout ammunition while maintaining the flexibility that makes the caliber popular for both traditional and suppressed AR-15 configurations.

Compatible with standard AR-15 lower receivers and magazines, this configuration is an excellent choice for shooters looking to convert an existing AR platform into a powerful and versatile 300 BLK build.

Specifications

Caliber: .300 AAC Blackout
Platform: AR-15
Barrel Length: 16" Medium Profile
Barrel Material: 4150V Chrome Moly Steel
Finish: Nitride Treated
Feed Ramps: M4 Feed Ramps
Twist Rate: 1:7 Button Rifled
Muzzle Thread: 5/8x24
Muzzle Device: 6" Flush Mount Mock Muzzle Brake / Shroud
Gas System: Pistol Length
Gas Block: .750 Steel Gas Block
Handguard: 15" Slim M-LOK Free Float Rail
Upper Receiver: A3 Flat Top 7075-T6 Forged Aluminum
Finish: Black Hardcoat Anodized
BCG & Charging Handle: Not Included (Sold Separately)

Perfect For

• 300 BLK AR-15 conversions
• Recreational shooting
• Target practice
• Hunting applications where permitted
• General-purpose AR-15 builds
• Suppressed or subsonic shooting configurations

Prefer a shorter configuration? Explore the Moriarti AR-15 300 Blackout 10.5" Upper Assembly.

Built for Versatility

The Moriarti 300 AAC Blackout 16-inch Complete Upper combines the proven AR-15 platform with one of the most versatile modern rifle cartridges available. Designed to work with standard AR-15 lower receivers and magazines, .300 Blackout allows shooters to enjoy both supersonic and subsonic ammunition options depending on their setup.

The 16-inch barrel configuration provides increased velocity compared to shorter pistol-length builds, making it an excellent choice for shooters who want a balanced AR-15 platform for range shooting, hunting, and general-purpose use.

The Black Canon Edition features a free-float M-LOK handguard for accessory mounting and improved barrel harmonics while maintaining a lightweight and functional design. Whether upgrading an existing rifle or starting a new AR-15 build, Moriarti Armaments delivers dependable performance backed by quality craftsmanship and a Limited Lifetime Warranty.

Frequently Asked Questions

Will this 300 Blackout upper fit my AR-15 lower?

Yes. This upper assembly is designed to fit most standard mil-spec AR-15 lower receivers.

Can I use standard AR-15 magazines with 300 Blackout?

Yes. .300 AAC Blackout was designed to function with standard AR-15 magazines. Many shooters dedicate magazines to specific calibers to prevent ammunition mix-ups.

Does this upper include a bolt carrier group and charging handle?

No. This configuration does not include a bolt carrier group or charging handle. These components are available separately.

Can I shoot both supersonic and subsonic ammunition?

Yes. The .300 AAC Blackout cartridge is designed to support both supersonic and subsonic ammunition loads when used with a properly configured firearm.

Is this 300 Blackout upper suppressor ready?

The barrel features a 5/8x24 threaded muzzle that accepts compatible muzzle devices and suppressors where legally permitted.

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