PRO2A Left Hand 20" 350 Legend Carbine Length Melonite M-LOK Upper

PRO2A LEFT HAND 20" 350 Legend 1/16 Carbine Length Melonite M-LOK AR-15 Upper

Product Overview

The PRO2A LEFT HAND 20" 350 Legend 1/16 Carbine Length Melonite M-LOK AR-15 Upper is engineered explicitly for left-handed big-game hunters looking to maximize velocity and range from the popular straight-walled 350 Legend cartridge. Featuring a true mirror-image left-side ejection layout, this complete upper assembly diverts hot brass, escaping gas, and ambient unburnt powder away from the shooter's line of sight. The extensive 20-inch barrel length squeezes every ounce of velocity out of the straight-walled cartridge, optimizing downstream energy transfer and overall long-range bullet drop predictability.

Key Features

True Left-Hand Architecture: Engineered with a specialized left-ejecting receiver profile and dedicated left-handed bolt carrier group for optimal southpaw operator ergonomics and safety.
Maximized 20-Inch Velocity Barrel: Premium 20-inch profile provides maximum possible burn time for straight-walled powders, flattening trajectories and maximizing kinetic impact at distance.
Optimized 1/16 Twist Rate: Precision rifling configuration designed explicitly for stabilizing common hunting grain variations of the .357-caliber 350 Legend bullets.
Salt Bath Melonite Treatment: High-performance QPQ Melonite finish internally hardens the bore and protects external barrel surfaces from harsh, damp elements found on cold weather hunts.
Reliable Carbine Gas Calibration: Tuned carbine-length gas port paired with a low-profile gas block provides consistent pressure cycling with reliable rimless straight-wall primary extraction.

Technical Specifications

Receiver Orientation:	True Left-Handed / Left Ejection Port Layout
Caliber / Chamber:	350 Legend (Straight-Wall Hunting Compliant)
Barrel Length:	20 Inches Medium Contour
Barrel Material:	4150 Chrome Moly Vanadium Steel - made for us by Tactical Kinetics
Twist Rate:	1:16 Twist Ratio
Barrel Coating Finish:	QPQ Melonite / Black Nitride Corrosion Resistance Finish
Gas System Profile:	Carbine-Length Gas System with 0.750" Low Profile Gas Block Set
Muzzle Thread Pitch:	5/8x24 TPI A2 Flash Hider (Enlarged to 35 Cal)
Upper Receiver Type:	Left-Hand Specific Billet Aluminum (Mil-Spec Type III Anodized)
Handguard Integration:	15 Inch Slim Free-Float Modular M-LOK Rail System with Full Top Picatinny Rail
Manufacturing Origin:	100% Manufactured in the USA

Why Choose This Product?

For hunters residing in strict straight-wall cartridge regulatory zones, the 350 Legend offers the ultimate balance of low recoil and devastating short-to-medium-range performance. Traditional right-handed uppers degrade a left-handed shooter's focus by spitting debris right into their face when focusing on game. The PRO2A Left Hand 20" Upper remedies this entirely, providing a true purpose-built southpaw solution. By stepping up to a full 20-inch Melonite barrel, this system gives you a severe velocity advantage over common shorter variants, rendering flatter trajectories for critical anchor shots on target when counting on your tag line.

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