AR-15 .350 Legend 20" Stainless Steel Tactical Upper Assembly – M-LOK, A2 Flash Hider

.350 Legend Upper: Specs & Features

Unlock the full potential of your AR-15 with the Moriarti Armaments .350 Legend 20" Stainless Steel Tactical Upper Assembly. This high-performance upper is designed to provide unrivaled precision, durability, and power. Whether you're hitting the range or tackling a hunting mission, the .350 Legend caliber offers an exceptional balance of performance with minimal recoil.

Featuring a 20" 416R Stainless Steel Barrel with a 1:16 twist, this upper delivers smooth and reliable shooting with a carbine-length gas system. The barrel is finished off with a 15" slim Mlok handguard, providing ample space for accessories while maintaining a sleek and ergonomic design.

This upper is built for tough use with a 7075-T6 aluminum A3 flat top receiver, and includes a low-profile steel gas block and A2 flash hider to enhance your shooting experience. Ready to mount on your AR-15 lower receiver, this upper assembly does not come with a BCG or Charging Handle, giving you the flexibility to customize your build.

Key Features:

• Caliber: .350 Legend for powerful, accurate shooting
• Barrel Length: 20" with 416R Stainless Steel, offering superior durability and accuracy
• Twist Rate: 1:16 for optimal bullet stabilization
• Gas System: Carbine-length gas system with a .750 steel low-profile gas block
• Handguard: 15" free float slim Mlok rail for flexible accessory mounting and lightweight construction
• Receiver: A3 flat top upper receiver made from high-quality 7075-T6 aluminum with black hardcoat anodizing for strength and corrosion resistance
• Muzzle Device: A2 Flash Hider to reduce muzzle flash
• Feed Ramp: Compatible with 300 Blackout feed ramps for smooth cycling
• Muzzle Thread: 5/8x24 thread for compatibility with a variety of muzzle devices

Specifications:

• Caliber: .350 Legend
• Barrel Length: 20"
• Barrel Profile: Heavy, 416R Stainless Steel
• Twist Rate: 1:16
• Gas System: Carbine-Length
• Gas Block: Low-Profile Steel, .750 diameter
• Muzzle Thread: 5/8x24
• Muzzle Device: A2 Flash Hider
• Receiver Material: 7075-T6 Aluminum
• Handguard: 15" Free Float Slim Mlok Rail
• Receiver Type: A3 Flat Top, Black Hardcoat Anodized
• Feed Ramp: 300 Blackout
• Weight: Approximately 4.5 lbs (subject to change with stock availability)

Why Choose This Upper Assembly?

The Moriarti Armaments .350 Legend Tactical Upper is designed for those who demand reliable, precise performance from their AR-15 platform. With a 20" stainless steel barrel, carbine-length gas system, and Mlok handguard, it combines the best of accuracy and customization. The .350 Legend cartridge provides superior terminal ballistics, making it ideal for hunting, tactical shooting, and home defense. Plus, the A2 flash hider reduces muzzle flash for a more controlled shooting experience.

Ready to install and fully customizable, this upper assembly is an ideal foundation for your next AR-15 build, offering precision and adaptability that will enhance your shooting 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