10.5" 5.56 NATO AR-15 Classic Upper – OD Green M-LOK, A2 Flash Hider

10.5" 5.56 Upper: Specs & Features

The Moriarti 10.5" 5.56 NATO Classic AR-15 Upper Assembly combines a compact barrel configuration with a distinctive OD Green 10" free-floating M-LOK handguard and black A3 flat-top upper receiver.

Built around a 10.5" 41V50 Chrome Moly Vanadium barrel with a 1:7 twist rate, this upper is chambered in 5.56 NATO and compatible with .223 Remington ammunition. Its carbine-length gas system features a .750 low-profile steel gas block, while the traditional A2 birdcage flash hider completes the configuration.

The contrasting black receiver and OD Green handguard give this Classic Series upper a distinctive appearance while retaining familiar AR-15 components and accessory compatibility.

Key Features

• 10.5" 41V50 CMV Barrel: Durable chrome moly vanadium steel construction with a 1:7 twist rate.

• 5.56 NATO Chamber: Compatible with both 5.56 NATO and .223 Remington ammunition.

• Carbine-Length Gas System: Equipped with a .750 low-profile steel gas block.

• 10" OD Green M-LOK Handguard: Slim, free-floating design with accessory mounting slots.

• A2 Birdcage Flash Hider: Traditional muzzle device installed on 1/2x28 barrel threads.

• Black A3 Flat-Top Receiver: Hardcoat anodized with installed forward assist and dust cover.

• M4 Feed Ramps: Integrated into the upper configuration.

• Classic Series Styling: Black receiver paired with an OD Green handguard.

Specifications

Package Includes

• Assembled 10.5" 5.56 NATO upper assembly

• 10" OD Green free-floating M-LOK handguard

• Installed carbine-length gas system

• Installed A2 birdcage flash hider

• Black A3 upper receiver with forward assist and dust cover

Bolt carrier group and charging handle are not included in the standard configuration. Optional selections may be available separately.

Lower receiver is not included.

Frequently Asked Questions

What is the difference between the OD Green Classic upper and the black Classic upper?

Both use the same core 10.5" 5.56 NATO configuration. This version features an OD Green M-LOK handguard paired with a black upper receiver.

Can this upper use .223 Remington ammunition?

Yes. The 5.56 NATO chamber is compatible with both 5.56 NATO and .223 Remington ammunition.

What type of handguard is installed?

This upper features a 10" slim, free-floating OD Green M-LOK handguard with mounting slots for compatible accessories.

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

No. These components are not included in the standard configuration and may be available as optional selections.

Is this a complete firearm?

No. This product is an upper assembly and does not include a lower receiver.

Product Image Notice

Images may not be the exact representation of the product.

FAQ

Will this upper fit my AR-15 lower?

Yes. It fits any standard mil-spec AR-15 lower receiver and uses a standard 5.56 bolt carrier group and STANAG/AR-15 magazines.

Can I shoot both 5.56 NATO and .223 Remington?

Yes. A 5.56 NATO or .223 Wylde chamber safely fires both 5.56 NATO and .223 Remington ammunition.

Is a bolt carrier group included?

No. The bolt carrier group is sold separately; any standard 5.56 AR-15 BCG will work.

What twist rate does it use?

A 1:7 twist, the mil-spec rate that stabilizes 55 gr through heavy 77 gr loads.

Related: 5.56 NATO & .223 Wylde AR-15 uppers