PRO2A Left Hand 11.5" 5.56 NATO NR Side Charging Melonite M-LOK Upper with Flash Can

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

Upgrade your left-handed AR-15 platform with the ultimate blend of modern ergonomics and tactical utility. The PRO2A LEFT HAND 11.5" 5.56 NATO Non-Reciprocating (NR) Side Charging Upper receiver anchors a premium Melonite-treated 4150 CMV barrel to a true left-handed, left-ejecting side-charging receiver system. Engineered with a smooth carbine-length gas block, a slim free-float M-LOK handguard, and a blast-forwarding extended flash can, this premium 100% American-made assembly delivers lightning-fast manipulation and a comfortable, debris-free shooting experience for southpaw operators.

Key Features

True Left-Handed Ejection Geometry: Dedicated mirror-image receiver architecture and a left-facing ejection port throw spent brass and high-pressure carbon blowback safely away from left-handed shooters' eyes and field of view.
Non-Reciprocating (NR) Side Charger: Features an ergonomic left-side charging handle that stays completely stationary while firing, allowing seamless weapon manipulation without taking your eyes off the target.
Blast-Directing Extended Flash Can: Directs muzzle blast, concussive forces, and gases straight downrange away from the shooter—perfect for short-barreled setups and tight indoor range stalls.
Melonite/Nitride Bore & Exterior Finish: The heavy-duty 4150 CMV steel barrel is fully treated with an advanced Salt Bath Melonite finish inside and out, vastly extending bore life and shielding against severe environmental moisture.
Optimized 11.5-Inch Dwell Time: Stepping up to an 11.5-inch barrel adds crucial dwell time over shorter 10.5-inch systems, resulting in lower internal gas pressures, smoother cycling, and decreased component wear.
Slim Profile Free-Float M-LOK Rail: Machined from premium aluminum, the lightweight handguard isolates barrel vibrations to preserve uniform mechanical accuracy while providing a continuous top rail and extensive M-LOK spacing.

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
Barrel Length & Steel	11.5 Inch Profile, 4150 Chrome Moly Vanadium Steel, Melonite Treated
Caliber	5.56x45mm NATO (Fully accepts .223 Remington ammunition)
Twist Rate	1:7 Twist (Precision Button Rifled for stabilizing versatile 55gr to 77gr match bullets)
Gas Operating Block	Carbine-Length System, Low-Profile Gas Block Machined from 4140 Steel, Stainless Steel Gas Tube
Muzzle Device	Extended Blast-Forwarding Flash Can, 1/2x28 Thread Pitch
Handguard	12 Inch Slim Profile Free-Float M-LOK Rail, Full-Length Top Picatinny Rail, Machined from 6061-T6 Aluminum
Manufacturing Origin	100% Made in the USA with Pro2A Tactical Lifetime Factory Warranty

Why Buy This Product?

The PRO2A LEFT HAND 11.5" 5.56 NATO Side Charging Melonite Upper solves the most frustrating challenges facing left-handed short-barrel builders: uncomfortable rear gas venting, aggressive muzzle blast, and awkward charging handle placement. Standard rear charging handles force you to break your cheek weld to clear a malfunction or load a round. By relocating manipulation to a non-reciprocating side handle, this upper enables fast, intuitive charging while maintaining a constant line of sight. Combined with our true mirrored left-eject mechanism, unburnt powder and hot carbon arc away from your face rather than directly into it.

Ballistically, this 11.5-inch configuration outperforms traditional 10.5-inch short setups by significantly improving dwell time, translating into a much smoother recoil impulse and higher reliability across various ammunition weights. When combined with the pre-installed Flash Can kit, the harsh concussive shockwave typical of short barrels is pushed forward, saving your hearing and protecting nearby shooters on the firing line. Backed completely by Pro2A Tactical's signature Lifetime Factory Warranty and manufactured entirely in the USA, this upper system upgrades your AR-15 into a highly optimized, ergonomic tactical asset built for your natural shooting posture.

More Information

More Information
SKU	P2ALNR556GFS12CAR115CAN-WLA
Barrel Length	11.5 inch
Rifle Caliber	5.56 NATO
Manufacturer	Pro2A Tactical

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