PRO2A LEFT HAND 7.5" 400 Legend 1/16 Pistol Length Melonite M-LOK AR-15 Upper Kit

Product Description

Pack immense straight-wall knockdown power into an ultra-compact package with mirror-image ergonomics and zero piecemeal component matching guesswork. The PRO2A LEFT HAND 7.5" 400 Legend Pistol Length Melonite M-LOK Upper Kit provides an all-inclusive firearm completion package engineered specifically to handle the structural feeding requirements and robust case expansion dynamics of Winchester's 400 Legend cartridge—fully optimized for left-handed operators. Constructed around a dedicated left-hand ejecting forged 7075-T6 aluminum receiver with specialized feed geometry tailored cleanly for thick, heavy straight-walled ammunition, this setup keeps escaping gases and spent brass away from your face. It houses a 7.5-inch 4150 CMV medium profile barrel with a stable 1:16 twist rate to maximize downrange projectile stabilization, delivering immense kinetic force from an ultra-portable footprint. Operating on a tuned pistol-length direct impingement gas setup to produce smooth cyclic curves, this turn-key configuration arrives completely paired with a heavy-duty, cartridge-matched left-handed bolt carrier group, full lower parts completion components, and a dedicated pistol buffer tube kit. Drop these components into your standard stripped lower receiver to finish your ultimate compact left-handed straight-wall brush gun or defense framework.

Key Features

• True Left-Hand Ergonomics: Dedicated mirror-image upper receiver design pairs left-hand spent case ejection with a matching left-handed BCG to provide absolute comfort and safety for southpaw shooters.
• Ultra-Compact 7.5" Footprint: Provides extreme maneuverability in dense brush or tight environments while maintaining massive big-bore ballistic knockdown energy margins.
• Turn-Key Completion Setup: Arrives complete with the left-handed upper assembly, cartridge-matched left-hand bolt carrier group (BCG), charging handle (CH), full lower parts kit (LPK), and a pistol buffer tube package.
• High-Impact 400 Legend Caliber: Custom chambered to deploy Winchester's straight-wall platform, delivering superior velocity scaling and close-to-medium range terminal transitions.
• Specialized Feed Profiling Receiver: Engineered specifically to cycle heavy straight-walled cartridge bodies cleanly and repeatedly without feeding friction or hang-ups.
• Resilient Free-Float M-LOK Architecture: Premium slim profile aluminum rail isolates the short barrel profile from external handling forces to preserve inherent mechanical consistency.
• Liquid Bath Nitride Protection: Full interior and exterior QPQ Melonite barrel treatment ensures maximum lifecycle defense against severe friction, heat wear, and harsh environmental moisture.

Why Choose This Product?

Building ultra-compact big-bore configurations often introduces harsh cycle parameters and feeding friction when trying to source left-handed components piecemeal. Pro2A Tactical eliminates these construction variables entirely. By pairing an expertly altered left-hand single feed ramp receiver with a precision 7.5-inch Melonite barrel, a robust left-handed cartridge-matched bolt carrier group, and a matching lower components bundle in one comprehensive kit, you secure reliable feeding cycle integration and hard-hitting portable power proudly built in the USA.