PRO2A LEFT HAND 16" 6.8 SPC II 1/10 Mid Length Melonite M-LOK AR-15 Upper

Product Overview

The PRO2A LEFT HAND 16" 6.8 SPC II 1/10 Mid Length Melonite M-LOK AR-15 Upper is engineered to deliver hard-hitting, medium-range ballistic performance tailored specifically for southpaw operators. Chambered in the optimized 6.8 SPC II cartridge, this complete upper receiver assembly features a true mirrored left-ejection port layout. By channeling expanding powder exhaust, gas blowback, and spent brass casings safely away from your face, it ensures a comfortable and distraction-free shooting experience. The 16-inch barrel and smooth mid-length gas configuration offer the perfect balance of muzzle velocity and tactical mobility for hunting, defensive work, or range performance.

Key Features

True Left-Hand Architecture: Mirrored left-ejecting receiver profile paired with a matched left-hand bolt carrier group routes high-pressure carbon blowback and blistering spent shells safely clear of left-dominant eyes.
6.8 SPC II Tactical Performance: Delivers superior downrange kinetic energy and stopping power compared to standard 5.56 options, maximizing field versatility on medium game and defensive targets.
Versatile 1/10 Twist Rifling: Precision-rifled land pitch engineered to provide exceptional stability and accuracy across popular hunting and tactical bullet weights.
QPQ Melonite Case Hardening: Highly durable Salt Bath Nitride treatment shields the internal bore and outer barrel surfaces against friction wear, intense thermal spikes, and damp field conditions.
Smooth Mid-Length Gas Calibration: Calibrated with a low-profile gas block to supply excellent dwell time, lowering component wear and softening the overall recoil impulse for rapid follow-up shots.
Free-Float Slim M-LOK Handguard: Enhances intrinsic accuracy by isolating barrel harmonics, providing an expansive top Picatinny rail and clear M-LOK attachment slots for grips, lights, and bipods.

Technical Specifications

Receiver Orientation:	True Left-Handed / Left Ejection Port Architecture
Caliber / Chamber:	6.8 SPC II (6.8x43mm)
Barrel Length & Contour:	16 Inches Medium Profile Taper
Barrel Material:	4150 Chrome Moly Vanadium Steel - Made for us by Hitman Industries
Twist Rate:	1:10 Twist Ratio
Barrel Finish:	QPQ Melonite / Black Nitride Corrosion-Resistant Exterior and Interior Lining
Gas System Profile:	Mid-Length Gas System with 0.750" Low Profile Gas Block Set
Muzzle Device:	Standard 5/8-24 A2 Flash Hider
Upper Receiver Type:	Mil-Spec Billet Aluminum Receiver Architecture (Type III Hardcoat Anodized)
Handguard Profile:	12 Inch Slim Free-Float Modular M-LOK Rail Layout with Continuous Top Picatinny Rail System
Manufacturing Origin:	100% Proudly Made in the USA

Why Choose This Product?

The 6.8 SPC II cartridge bridges the gap between traditional small-bore agility and large-caliber energy transfer. However, running a hard-hitting hunting round like this on a standard right-hand upper forces left-handed shooters to deal with dense exhaust gas and debris flying right past their face. The PRO2A Left Hand 16" Upper eliminates this issue completely, routing hot brass safely to the left so you can focus unhindered on your target alignment.

By shifting to a smooth-cycling mid-length gas system, this upper receiver assembly dampens the recoil of the 6.8 cartridge into a mild, controllable push. Combined with a rugged 4150 steel barrel and a premium Melonite anti-corrosion barrier, this assembly provides southpaw operators with an uncompromised, clean-cycling, and ultra-reliable tactical or hunting powerhouse built to perform straight out of the box.