PRO2A 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 without individual component matching guesswork. The PRO2A 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. Constructed around a premium forged 7075-T6 aluminum receiver with specialized feed geometry tailored cleanly for thick, heavy straight-walled ammunition, this setup houses a 7.5-inch 4150 CMV medium profile barrel. The stable 1:16 twist rate maximizes 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 build configuration arrives completely paired with a heavy-duty, cartridge-matched 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 straight-wall brush gun or defense framework.

Key Features

• 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: Eliminates separate tracking headaches; arrives complete with the upper assembly, cartridge-matched 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 using standard piecemeal parts. Pro2A Tactical eliminates these construction variables entirely. By pairing an expertly altered single feed ramp receiver with a precision 7.5-inch Melonite barrel, a robust 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.