PRO2A Left Hand 12.5" 5.56 NATO Carbine NR Side Charging Upper Kit
PRO2A LEFT HAND 12.5" 5.56 NATO 1/7 Carbine Length NR Side Charging Melonite M-LOK AR-15 Upper Kit
Product Overview
The PRO2A LEFT HAND 12.5" 5.56 NATO 1/7 Carbine Length NR Side Charging Melonite M-LOK AR-15 Upper Kit represents an elite, all-in-one upgrade package for left-handed builders seeking the perfect intermediate-length platform. This comprehensive performance build kit features a true left-ejecting architecture and upgrades standard receiver handling to a fluid, Non-Reciprocating (NR) side-charging layout. Stripping the guesswork out of your custom assembly, this kit arrives complete with a specialized left-handed Bolt Carrier Group (BCG), a premium Mil-Spec lower parts kit, and a rugged pistol stabilizing blade assembly. The 12.5-inch Melonite barrel delivers an optimized balance of 5.56 NATO terminal velocity and compact maneuvering agility, making it the definitive package for modern defensive pistol or SBR configurations.
Key Features
True Left-Hand Architecture & BCG: Left-ejecting upper paired with a matched left-handed bolt carrier group routes high-pressure carbon blowback and spent shells safely away from left-dominant eyes.
Non-Reciprocating Side Charging: Fluid side charging handle remains completely stationary while firing, providing smooth manual manipulation without interfering with your optics or moving parts near your hand.
Complete Pistol Build Package: Consolidates your assembly project by grouping a premium mil-spec lower parts kit, left-hand BCG, and a stabilizing pistol blade system under one part number.
Optimized 12.5-Inch Barrel: Yields significantly better ballistic velocity retention for the 5.56 NATO cartridge compared to ultra-short setups, while preserving outstanding handling speeds in tight spaces.
Fast 1/7 Twist Rifling: Precision-rifled profile engineered to provide excellent rotational stabilization for popular heavy grain tactical and defensive ammunition (62gr, 69gr, and 77gr).
QPQ Melonite Hardened Finish: High-grade Salt Bath Nitride finish protects the bore and external steel barrel surfaces against humidity, rapid thermal transfer, and surface tracking.
Complete AR-15 Mil-Spec Lower Parts Kit (Polished Trigger, Hammer, Pins, Springs, and Pistol Grip)
Stabilizing Assembly:
Pistol Stabilizing Blade Assembly with Pistol Buffer Tube, Recoil Spring, and Heavy Buffer
Caliber / Chamber:
5.56 NATO (Fully Compatible with .223 Remington rounds)
Barrel Length & Contour:
12.5 Inches Medium Contour Profile
Barrel Material:
4150 Chrome Moly Vanadium Steel - Made for us by Kinetic MFG
Twist Rate:
1:7 Twist
Barrel Finish:
QPQ Melonite / Black Nitride Corrosion-Resistant Coating
Gas System Length:
Carbine-Length Gas System with 0.750" Low Profile Gas Block Set
Muzzle Thread Pitch:
1/2x28 TPI A2 Flash Hider
Upper Receiver Type:
Gibbz Arms G4 Left Handed Billet Aluminum Side-Charging Receiver, Gen 2 Handle (Type III Hardcoat Anodized)
Handguard Profile:
10 Inch Slim Free-Float Modular M-LOK Rail Layout with Continuous Top Picatinny Section
Manufacturing Origin:
100% Proudly Made in the USA
Why Choose This Product?
Running a high-velocity 5.56 NATO round through a compact 10.5-inch barrel typically creates a punishing concussive signature. For a left-handed shooter on a standard right-hand upper, this means breathing in heavy exhaust gas while trying to ignore distracting muzzle flash. The PRO2A Left Hand Side Charging Flash Can Upper elegantly addresses every single one of these operational hurdles. By combining a dedicated left-ejecting chassis with a project-forward linear flash can, noise and hot debris are pushed completely away from your eyes and ears. Complete with a fluid, stationary side charging handle that allows fast manipulation without breaking your optic alignment, this assembly offers southpaw operators a smooth-cycling, compact powerhouse built to perform under pressure.
