PRO2A Left Hand 8.5" 7.62x39 1/10 Pistol Length Melonite M-LOK AR-15 Upper Kit | Pro2A Tactical

PRO2A LEFT HAND 8.5" 7.62x39 1/10 Pistol Length Melonite M-LOK AR-15 Upper Kit

Product Description

Pack the severe close-quarters impact and deep terminal fragmentation of the standard 7.62x39mm cartridge into an exceptionally compact platform while maintaining absolute ergonomic safety and eliminating all component matching guesswork. The PRO2A LEFT HAND 8.5" 7.62x39 Pistol Length Melonite M-LOK Upper Kit delivers hard-hitting intermediate ballistics natively tailored from the ground up for southpaw operators. Utilizing a mirrored left-ejecting receiver profile and a matching left-hand M16 bolt carrier group, this system completely removes cross-body brass throwing and facial carbon gas blowback common when lefties run traditional right-handed short platforms. The premium 8.5-inch 4150 CMV medium profile barrel features a 1:10 twist rate that ensures exceptional stability for standard 122gr to 124gr projectiles out of an abbreviated bore profile. Fine-tuned with a reliable direct impingement pistol-length gas layout and a low-profile gas block to handle cyclic pressure curves safely, this turn-key platform arrives completely paired with a heavy-duty left-handed bolt carrier group upgraded with an enhanced firing pin for reliable ignition with harder primers. Bundled alongside a full lower parts kit and a high-density stabilizing blade package, this turnkey system converts any standard stripped lower receiver into an elite compact tool.

Key Features

True Left-Hand Ejection Architecture: Dedicated mirrored port arrangement completely eliminates cross-body brass throwing and concussive facial blowback for southpaw operators.
Steel Case Primer Reliability: Included left-handed bolt carrier group features an enhanced, extended-tip firing pin engineered explicitly to reliably ignite harder military-grade steel-cased primers.
Tuned Pistol-Length Gas Curve: Optimizes internal gas expansion velocity and dwell times to deliver flat, uniform mechanical cycling profiles with a wide variety of factory intermediate ammunition.
Premium QPQ Melonite Protection: Liquid bath nitride treated 4150 Chrome Moly Vanadium steel core delivers supreme friction defense, deep weatherproofing, and long throat life.
Turn-Key Lower Completion Package: No piecemeal component tracking required; arrives complete with a left-hand upper assembly, enhanced firing pin left-hand BCG, full lower parts kit, fire control trigger group, and an adjustable pistol blade assembly.

Technical Specifications

Upper Receiver	Billet Aluminum, M4 Feed Ramps, (Dedicated Left-Hand Ejection Port Setup), Type III Hardcoat Anodized Black
Charging Handle	Standard Mil-Spec Charging Handle
Bolt Carrier Group	Milspec Left-Hand M16 Full Auto Profile, 7.62x39mm Caliber, QPQ Nitride/Melonite Treated, MPI Tested, Upgraded Enhanced Left-Hand Firing Pin for Reliable Hard Primer Ignition, 8620 Carrier, 9310 Bolt
Barrel Length & Profile	8.5-Inch Medium Contour
Caliber	7.62x39mm
Twist Rate	1:10 Right-Hand Twist (Highly optimized for standard weight steel-case and brass factory loads)
Barrel Material	4150 Chrome Moly Vanadium Steel with QPQ Melonite Nitride Finish
Gas System	Pistol Length Direct Impingement with Low-Profile Gas Block
Handguard	7-Inch Free Float Slim Profile M-LOK Handguard Rail System
Muzzle Device	Standard A2 Flash Hider, 5/8x24 Thread Pitch, Bored for .311 Caliber
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)
Blade Assembly	High Density Adjustable Blade, Pistol Buffer Tube (Receiver Extension), Carbine Recoil Buffer, and Spring

Why Choose This Product?

Running 7.62x39mm out of a short AR-15 barrel traditionally introduces ignition failures due to hard primers and cycling hesitation from improper gas hole mapping—and running a short right-handed setup puts unmanaged gas blowback directly across a left-handed operator's face. Pro2A Tactical resolves these structural hurdles completely. By matching a true mirrored left-ejection action with a precision-drilled pistol gas port core, an enhanced deep-striking firing pin, a robust Melonite treatment, and a complete lower receiver build bundle, this complete, American-made kit yields safe-to-face field reliability and heavy downrange energy right out of the box.