PRO2A Left Hand 11.5" 5.56 NATO NR Side Charging Upper | Pro2A Tactical

PRO2A LEFT HAND 11.5" 5.56 NATO 1/7 Carbine Length NR Side Charging Melonite M-LOK AR-15 Upper

True Left-Handed Ejection Meets Advanced Non-Reciprocating Side Control

Engineered from the ground up for Southpaw shooters demanding high performance, ergonomics, and clean operational visibility. The PRO2A Left Hand 11.5" 5.56 NATO Non-Reciprocating (NR) Side Charging AR-15 Upper entirely rewrites standard platform controls. By mirroring the ejection layout to the left and dropping the traditional rear charging handle in favor of a left-side non-reciprocating charging setup, this upper keeps hot brass and high-pressure diagnostic blowback out of left-handed eyes. Built around a highly sought-after 11.5-inch 4150 CMV steel barrel, this complete upper assembly provides a major step up in weapon cycling reliability over shorter barrel alternatives. It arrives complete with a matching, left-hand side-charging bolt carrier group (BCG) and mounts natively to any standard Mil-Spec AR-15 lower receiver. Proudly 100% designed, machined, and precision-tested in the USA.

Key Features

Dedicated Left-Handed Ejection Port: Features a true mirrored receiver profile that ejects spent casing debris safely to the left, saving left-dominant operators from the facial gas blast typical of right-handed conversions.
Non-Reciprocating Side Charging Handle: The side handle operates completely independently from the cycling bolt carrier group. It remains static during firing sequences, protecting your optics workspace and removing standard rear charging gymnastics.
Optimal 11.5-Inch Gas Dwell Time: The chosen 11.5" profile provides an extended gas dwell window compared to common 10.5" barrels. This lowers internal system wear, smooths extraction phases, and produces a noticeably softer recoil impulse.
Melonite/Nitride Barrel Protection: The heavy-duty 4150 CMV steel barrel is fully treated with an advanced Salt Bath Melonite finish inside and out. This premium chemical hardening vastly extends barrel life against aggressive gas erosion and environmental elements.
Aggressive 1:7 Twist Rate: Precision button-rifled with a fast 1:7 twist configuration engineered to stabilize heavy duty tactical and military-grade projectiles—such as 62-grain and 77-grain match choices—with absolute consistency.
Slim Profile Free-Float M-LOK Handguard: Crafted from durable 6061-T6 aluminum, the free-float rail isolates barrel vibrations to preserve uniform mechanical accuracy while providing extensive modular M-LOK accessory attachment space.

Technical Specifications

Upper Receiver	Gibbz Arms LEFT HANDED G4 Non Reciprocating Side Charging Billet Aluminum Receiver with Gen 2 Handle, M4 Feed Ramps, Type III Hardcoat Anodized Black
Charging	Non-Reciprocating Right-Side Manual Charging System (Handle Stays Stationary While Firing)
Barrel Length & Steel	11.5 Inch Profile, 4150 Chrome Moly Vanadium Steel, Medium Contour, Melonite Treated
Caliber	5.56 NATO (Fully compatible with .223 Remington ammunition)
Twist Rate	1:7 Twist (Optimized to stabilize heavy duty 62gr, 69gr, and 77gr match loads)
Gas Operating Block	Carbine-Length System, Low-Profile Gas Block Machined from 4140 Steel, Stainless Steel Gas Tube
Muzzle Device	Standard 1/2-28 Thread Pitch, A2 Birdcage Flash Hider with Crush Washer Pre-Installed
Handguard Structure	10 Inch Slim Profile Free-Float M-LOK Rail, Top Picatinny Rail, Machined from 6061-T6 Aluminum
Manufacturing Origin	100% Made in the USA with Pro2A Tactical Lifetime Factory Warranty

Why Choose This Product?

The PRO2A Left Hand 11.5" 5.56 NATO NR Side Charging Upper Receiver fixes the three biggest headaches left-handed shooters encounter on the AR platform: gas-in-face deflection, mirror-image handling gymnastics, and compact cycling unreliability. Traditional right-handed short assemblies force left-dominant operators to breathe in harsh powder residues and oil blowback, especially if running a suppressor. Moving the ejection path to the left side entirely mitigates this issue, protecting your vision and lungs.

Furthermore, military and professional operators choose an 11.5-inch barrel configuration as the absolute sweet spot for short platforms. It gains approximately 40% more internal gas dwell time over standard 10.5-inch barrels, which vastly tames over-gassing and lowers system cycling failure rates. Paired with a static, non-reciprocating side-charging interface, you can clear malfunctions or charge your chamber effortlessly without pulling your face away from your optical cheek weld. Backed completely by Pro2A Tactical's signature Lifetime Factory Warranty and manufactured with 100% American components, this upper introduces true ergonomic equity and operational reliability to Southpaw shooters.

More Information

More Information
SKU	P2ALNR556BW10CAR115-WLA
Barrel Length	11.5 inch
Rifle Caliber	5.56 NATO
Manufacturer	Pro2A Tactical

Reviews

PRO2A LEFT HAND 10.5" 5.56 NATO 1/7 Carbine Length NR Side Charging Melonite M-LOK AR-15 Upper with Flash Can