AR-15 .350 Legend 10" Tactical Upper Assembly – M-LOK, Cerakote Color Options

.350 Legend Upper: Specs & Features

Upgrade your AR-15 with the Moriarti Armaments .350 Legend 10" Tactical Upper Assembly, now available in FDE, Grey, and OD Green Cerakote color options. This powerful 10" barrel assembly is designed to deliver superior velocity and energy, making your rifle more versatile for hunting, tactical applications, or recreational shooting. Offering a 1:16 twist rate and 5/8x24 thread, this upper provides optimal performance with .350 Legend ammo. The 10" slim M-Lok handguard gives you the flexibility to attach accessories, while the carbine-length gas system ensures consistent and reliable operation.

Key Features:

• Caliber: .350 Legend for outstanding performance and power
• Barrel Length: 10" for an ideal combination of velocity and compactness
• Barrel Twist Rate: 1:16 for superior accuracy and projectile stabilization
• Muzzle Thread Pitch: 5/8x24 for compatibility with various muzzle devices
• Cerakote Color Options: FDE, Grey, OD Green for a unique and custom appearance
• Handguard: 10" Free Float Slim M-Lok Rail for versatile accessory mounting
• Gas System: Carbine-length for reliable cycling in various conditions
• Gas Block: .750 low-profile steel gas block for optimal performance
• Receiver: 7075-T6 Aluminum forged A3 Flat Top Upper Receiver
• Charging Handle: Not included (tactical Cerakote charging handle sold separately)
• Muzzle Device: A2 flash hider to reduce muzzle flash
• Assembly: Ready to mount to your lower receiver (BCG and Charging Handle not included)

Detailed Specifications:

• Caliber: .350 Legend
• Barrel Length: 10"
• Barrel Profile: M4 Contour for durability and performance, 4150 CMV
• Twist Rate: 1:16 for perfect projectile stabilization
• Muzzle Thread Pitch: 5/8x24
• Gas System: Carbine-length for smooth cycling
• Gas Block: .750 low-profile gas block for optimized flow
• Handguard: 10" Free Float Slim M-Lok Rail for attaching accessories
• Upper Receiver: 7075-T6 Aluminum forged, black hardcoat anodized
• Charging Handle: Tactical Charging Handle Cerakote finish (sold separately)
• BCG - Sold separately
• Muzzle Device: A2 Flash Hider with 5/8x24 thread pitch
• Weight: Approximately 4.2lbs 

Why Choose This Upper Assembly?

The Moriarti Armaments .350 Legend 10" Tactical Upper Assembly is designed for those who demand high-performance and versatility in a compact package. The 10" barrel offers fast handling without sacrificing the power and velocity of the .350 Legend cartridge. Its 1:16 twist rate ensures that your rounds are fired with accuracy and precision, while the M-Lok handguard provides a customizable platform to add accessories like grips, optics, and lights.

Whether you're heading out for a hunt or engaging in tactical training, the carbine-length gas system guarantees smooth operation, ensuring your rifle performs under various conditions. Choose your preferred Cerakote color — FDE, Grey, or OD Green — to create a unique, personalized look for your rifle build.

This upper assembly comes fully assembled and is ready to mount onto your lower receiver, giving you a quick and easy way to upgrade your AR-15 platform to .350 Legend performance. Images may not be an exact representation of the product.

FAQ

Will this upper fit my AR-15 lower?

Yes. It fits a standard mil-spec AR-15 lower receiver.

What bolt and magazines do I need?

.350 Legend runs on a standard 5.56 AR-15 bolt carrier group, so no specialty bolt is needed. Dedicated .350 Legend magazines are recommended for reliable feeding.

Is .350 Legend legal for deer hunting?

It is a straight-wall cartridge accepted in many straight-wall deer hunting states. Always check your state's current regulations.

What twist rate does it use?

A 1:16 twist, the standard rate for .350 Legend.

Related: .350 Legend uppers · all AR-15 upper assemblies