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The PRO2A Left Hand 14.5" 5.56 NATO Mid Length Melonite M-LOK Upper Kit with Flash Can - Pinned & Welded delivers an elite all-in-one rifle completion configuration engineered from the ground up for ultimate southpaw ergonomics and streamlined legal compliance. This specialized bundle features an extended linear blast-forwarding Flash Can permanently pinned and welded to the barrel, satisfying the legal federal 16-inch civilian rifle length requirement without federal NFA short-barreled rifle registration. Complete with a soft-cycling mid-length upper system, a mirrored left-ejecting receiver layout, a dedicated left-handed bolt carrier group, full lower parts completion hardware, and an adjustable stock completion package, it supplies everything required to transition a stripped lower receiver into a highly maneuverable, non-restricted field rifle.
| Upper Receiver | Billet Aluminum, M4 Feed Ramps (Dedicated Left-Hand Ejection Port Setup) |
|---|---|
| Charging Handle | Standard Mil-Spec Charging Handle |
| Bolt Carrier Group | Milspec Left-Hand M16 Full Auto Profile, QPQ Nitride/Melonite Treated, MPI Tested |
| Barrel Length | 14.5-Inch Barrel (Permanently achieves 16-Inch Overall Length via Pinned & Welded extended muzzle device) |
| Caliber | 5.56 NATO (Safely accepts .223 Remington) |
| Twist Rate | 1:7 Twist Rate (Highly optimized for standard 62gr to heavy 77gr match projectiles) |
| Barrel Material | 4150 Chrome Moly Vanadium Steel with QPQ Melonite Nitride Finish |
| Gas System | Mid Length Direct Impingement with Low-Profile Gas Block |
| Handguard | 15-Inch Extended Free Float Slim Profile M-LOK Handguard Rail System (Recesses muzzle device cleanly) |
| Muzzle Device | Extended Slimline Linear Flash Can (Permanently Pinned and Welded / 1/2x28 Thread Base) |
| Lower Parts Kit | Complete AR-15 Lower Parts Kit (LPK) including Pivot/Takedown Pins, Bolt Catch, Magazine Catch, Springs, Detents, Standard Pistol Grip, and Mil-Spec Fire Control Group (Trigger & Hammer Assembly) |
| Stock Assembly | M4 Carbine Adjustable Buttstock, 6-Position Mil-Spec Buffer Tube (Receiver Extension), Carbine Recoil Buffer, and Spring |
This premium 14.5-inch left-handed pinned and welded complete kit updates traditional short-barreled rifle configurations into an ultra-reliable, non-restricted firearm system tailored specifically for left-handed operators. By combining a soft-cycling mid-length gas system configuration with an integrated handguard-recessed linear blast device, it clears the intense facial gas blowback, port pop, and violent cycling common to shooting right-handed uppers southpaw. Shipped completely with a heavy-duty nitrided left-handed carrier group, full lower parts completion hardware, and an adjustable stock completion package, it equips home builders with a streamlined, zero-compromise pathway to an elite tactical carbine built for continuous operational longevity.
| SKU | P2AL556AX15CAR145CAN-TK-KIT-PW |
|---|---|
| Barrel Length | 14.5 inch |
| Rifle Caliber | 5.56 NATO |
| Manufacturer | Pro2A Tactical |