PRO2A 16" 350 Legend Carbine Length Melonite M-LOK AR-15 Upper Receiver | Pro2A Tactical

PRO2A 16" 350 Legend 1/16 Carbine Length Melonite M-LOK AR-15 Upper Receiver

Product Overview

The PRO2A 16" 350 Legend 1/16 Carbine Length Melonite M-LOK AR-15 Upper Receiver delivers optimal straight-walled performance and rugged reliability in a premium, barreled upper assembly. Engineered explicitly to maximize the velocity and energy profiles of the popular .350 Legend cartridge, this optics-ready upper receiver brings legal, flat-shooting whitetail capability directly to any standard mil-spec AR-15 lower receiver setup. Featuring a premium 16-inch 4150 CMV heavy-profile barrel and a free-floating aluminum rail, the entire assembly arrives meticulously timed, aligned, and torque-verified for immediate deployment in straight-wall restricted hunting territories.

Key Features

Drop-In Straight-Wall Solution: Instantly converts any standard mil-spec AR-15 platform into a legal, medium-game hunting rifle optimized for straight-wall compliance zones.
Precision 1/16 Twist Rate: Specifically optimized to rotationally stabilize the complete spectrum of standard .357-caliber hunting and target bullet weights cleanly.
Reliable Carbine gas Impingement: Standard low-profile 0.750" gas block and carbine length setup properly manage cyclic pressures for soft, reliable extraction and loading strings.
Inside-Out QPQ Melonite Protection: Liquid salt-bath nitride surface treatment shields internal rifling lines from fast gas erosion while forming an impenetrable barrier against environmental moisture.
Slim Free-Float M-LOK Rail: Isolates structural barrel harmonic variables to guarantee strict sub-MOA precision while extending a continuous top Picatinny rail axis and deep M-LOK modular mounting side walls.

Technical Specifications

Receiver	Mil-Spec Forged 7075-T6 Aluminum, Enlarged M4 Feed Ramps, Type III Hardcoat Anodized Matte Black Finish, Forward Assist & Dust Cover
Barrel Length & Contour	16 Inches; Medium Profile
Barrel Material	4150 Chrome Moly Vanadium (CMV) Steel
Twist Rate Optimization	1:16 Twist (Optimized for straight-wall hunting loads)
Barrel Coating Treatment	QPQ Melonite / Liquid Salt Bath Nitride Interior Bore and Exterior Shielding for Extreme Wear and Corrosive Resistance
Gas Impingement Setup	Carbine-Length Gas System with 0.750" Low Profile Gas Block, Stainless Steel Gas Tube Layout
Muzzle Thread & Device	5/8-24 TPI A2 Flash Hider
Handguard Rail Profile	12 Inch Slim Profile Free-Float Aluminum Handguard, Continuous Top Picatinny Rail Alignment, Modular M-LOK Mounting Slots
Manufacturing Origin	100% Proudly Assembled, Aligned, and Quality Inspected in the USA with Pro2A Tactical Lifetime Factory Warranty

Why Choose the PRO2A 350 Legend Free-Float Upper?

Harnessing the flat trajectories and heavy punch of the .350 Legend cartridge inside a modern sporting rifle requires expert component pairing to prevent feeding jams or premature cycling wear. Pro2A Tactical isolates structural variables on the assembly bench to eliminate tolerance stacking entirely. Our premium 4150 CMV heavy barrels are button-rifled at a tight 1/16 twist to ensure heavy hunting rounds track downrange with consistent sub-MOA groupings. By timing a smooth-cycling carbine gas loop perfectly inside a rugged free-floated handguard assembly, this barreled upper eliminates external barrel distortion and severe cyclic gas shock. Skip the technical assembly tools and upgrade your platform with a duty-ready hunting asset you can trust right out of the box.

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