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7.5 inch LEFT HAND 5.56 NATO Nitride Upper | Shop Now & Save

PRO2A LEFT HAND 7.5" 223/5.56 1/7 Pistol Length Melonite M-LOK AR-15 Upper

10.5 inch LEFT HAND 5.56 NATO Nitride Upper | Pro2A Tactical

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

PRO2A LEFT HAND 10.5" 5.56 NATO 1/7 or 1/5 Carbine Length Melonite M-LOK AR-15 Upper

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Special Price $249.99 $459.99
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SKU
P2AL556AX9CAR105-TK
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PRO2A Left Hand 10.5" 5.56 NATO 1/7 Carbine Length Melonite M-LOK AR-15 Upper Receiver

PRO2A LEFT HAND 10.5" 5.56 NATO 1/7 Carbine Length Melonite M-LOK AR-15 Upper Receiver

Unlock optimized maneuvering performance and specialized stabilization out of your left-handed AR-15 platform with this premium 100% American-made upper receiver assembly. The PRO2A LEFT HAND 10.5" 5.56 NATO Upper anchors a tactical, premium Melonite-treated 4150 CMV barrel to a true left-handed, left-ejecting mil-spec forged 7075-T6 aluminum receiver. Complete with a reliable carbine-length gas block system, a slim free-float M-LOK handguard, a pre-headspaced left-handed precision bolt carrier assembly, and a standard muzzle device, this assembly delivers everything required to seamlessly transform your lower receiver into a highly capable close-quarters tactical asset.

Key Features

  • True Left-Handed Ejection Geometry: Mirrored receiver architecture and a dedicated left-facing ejection port keep hot brass and high-pressure carbon blowback arcing safely away from left-handed shooters' eyes and field of view.
  • Tailored Twist Rate Choices: Available in a standard 1:7 twist - engineered specifically to maximize rotational velocity on highly specialized heavy projectile loads.
  • Optimized 10.5-Inch Tactical Profile: Built explicitly to hit the ideal cross-section of short-barreled rifle (SBR) maneuverability and reliable velocity extraction out of the standard 5.56x45mm cartridge.
  • 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 bore life against rapid gas erosion at the port and shields against moisture.
  • Smooth Carbine-Length Gas Dwell: Precision engineered gas port dynamics ensure balanced system pressures, translating into a smooth cycling impulse and minimized wear on internal receiver components.
  • Slim Profile Free-Float M-LOK Rail: Crafted from premium 6061-T6 aluminum, the free-float rail isolates barrel vibrations to preserve uniform mechanical accuracy while providing massive M-LOK modular real estate.

Technical Specifications

Upper Receiver True Dedicated Left-Hand Upper Receiver, BilletAluminum, M4 Feed Ramps, Type III Hardcoat Anodized Black Finish
Barrel Length & Steel 10.5 Inch Profile, 4150 Chrome Moly Vanadium Steel, Medium Contour, Melonite Treated
Caliber 5.56x45mm NATO (Fully accepts .223 Remington ammunition)
Twist Rate Options 1:7 Twist
Gas Operating Block Carbine-Length System, Low-Profile Gas Block Machined from 4140 Steel, Stainless Steel Gas Tube
Muzzle Device Standard 1/2x28 Thread Pitch, A2 Birdcage Flash Hider with Crush Washer Pre-Installed
Handguard 9 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 10.5" 5.56 NATO Melonite Upper directly solves the three biggest hurdles facing close-quarters southpaw builders: managing uncomfortable right-handed debris exhaust, choosing proper gas dwell configurations on short platforms, and avoiding unburned powder blowback. Traditional setups force left-handed shooters to tolerate gas vents drifting directly toward their eyes and hot brass arcing across their visual workspace. Our true mirrored left-eject mechanism preserves an unobstructed field of view. While standard right-handed short builds dump hot carbon into your face, this configuration keeps your shooting posture clean, safe, and fully functional.

Furthermore, navigating standard right-handed parts limitations means compromising on your build quality. This upper receiver configuration balances portability and ballistic drive seamlessly. By integrating a true carbine-length gas dwell over a 10.5-inch barrel length, cycling rates remain robust and predictable without inducing the aggressive internal violence common to shorter pistol-length 5.56 builds. Backed completely by Pro2A Tactical's signature Lifetime Factory Warranty and engineered with 100% American-made materials, this upper receiver delivers premium reliability custom-built for your natural shooting posture.

More Information
SKU P2AL556AX9CAR105-TK
Barrel Length 10.5 inch
Rifle Caliber 5.56 NATO
Manufacturer Pro2A Tactical
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