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The PRO2A LEFT HAND 12.5" 5.56 NATO 1/7 Carbine Length NR Side Charging Melonite M-LOK AR-15 Upper with Flash Can Kit represents an elite, all-in-one upgrade package for left-handed builders seeking the perfect intermediate-length tactical platform with enhanced blast mitigation. 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. To tame the raw concussive forces inherent to short-barreled 5.56 configurations, this kit includes a built-in project-forward linear Flash Can. 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.
| Receiver Orientation: | True Left-Handed / Left-Side Ejection Geometry |
| Charging Mechanism: | Non-Reciprocating (NR) Left-Side Charging System |
| Bolt Carrier Group (BCG): | Premium True Left-Handed BCG, M16 Profile, Nitride/Melonite Finished, MPI Tesed |
| Lower Parts Kit (LPK): | 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 Device: | 1/2x28 TPI Slimline Flash Can |
| Upper Receiver Type: | Gibbz Arms G4 Left Handed Billet Aluminum Side-Charging Receiver, Gen 2 Handle (Type III Hardcoat Anodized) |
| Handguard Profile: | 15 Inch Slim Free-Float Modular M-LOK Rail Layout with Continuous Top Picatinny Section |
| Manufacturing Origin: | 100% Proudly Made in the USA |
Stay on Target with Non-Reciprocating ControlTraditional rear charging handles force you to break your cheek weld to clear a malfunction or cycle the action. The side-charging handle stays stationary while firing, meaning zero moving parts near your support hand and perfect clearance for your optics. You can cycle the system seamlessly while keeping your eyes locked onto your target.
Ultimate Blast and Concussion ControlFiring high-velocity 5.56 NATO rounds out of a compressed 12.5-inch barrel typically creates a punishing side-concussion for you and anyone next to you on the firing line. The integrated linear Flash Can catches that raw structural blast and channels the sound, flash, and expanding gases directly downrange away from your ears and face.
The 12.5" Ballistic Sweet SpotWhile ultra-short 7.5-inch barrels severely limit the velocity and effective range of the 5.56 cartridge, a 12.5-inch intermediate barrel preserves excellent terminal ballistics and flatter trajectories. Paired with a fast 1/7 twist rate and premium Salt Bath Melonite case hardening by Tactical Kinetics, it properly stabilizes heavier tactical projectiles (62gr to 77gr) while maintaining peak agility in tight spaces.
| SKU | P2ALNR556AX15CAR125CAN-TK-KIT |
|---|---|
| Barrel Length | 12.5 inch |
| Rifle Caliber | 5.56 NATO |
| Manufacturer | Pro2A Tactical |
