PRO2A 16" 40 S&W 1/16 Pistol Caliber Melonite M-LOK AR-15 Upper Kit

Product Description

Maximize the ballistic efficiency, velocity potential, and low-recoil consistency of your favorite pistol cartridge on a carbine platform without component matching guesswork. The PRO2A 16" 40 S&W Pistol Caliber Melonite M-LOK Upper Build Kit provides an all-inclusive rifle completion package engineered specifically to handle the structural parameters of the .40 S&W round. Constructed around a premium forged 7075-T6 aluminum receiver optimized for slick-side pistol caliber configurations, this setup features a 16-inch 4150 CMV medium profile barrel. The specialized 1:16 twist rate provides pinpoint rotational stability for standard 165-grain to heavy-grain 180-grain factory ammunition. Operating on a rugged straight blowback mechanism that completely eliminates gas blocks and port erosion variables, this turn-key bundle arrives fully paired with a matching blowback bolt carrier group, dedicated PCC recoil buffer system, complete lower parts kit, and an adjustable 6-position carbine stock assembly. Drop these components directly onto your dedicated Glock pattern or compatible stripped lower receiver to complete a high-performance custom tool.

Key Features

• Full 16-Inch Muzzle Velocities: Squeezes complete powder burn from the .40 S&W cartridge, extending intermediate downrange trajectory control and kinetic energy transfer compared to standard handgun platforms.
• Tailored 1:16 Twist Stability: Precision-contoured to flawlessly stabilize lightweight defensive hollow-points up to heavy standard-weight flat-nose target projectiles.
• Rugged Straight Blowback Setup: Bypasses gas tubes and cycling port parameters completely, ensuring a mechanically simple, remarkably dependable cycling stroke under heavy volume fire strings.
• Premium QPQ Melonite Protection: Liquid bath nitride treatment hardens the 4150 Chrome Moly Vanadium core inside and out to maximize friction defense, absolute weatherproofing, and prolonged bore precision.
• Turn-Key Rifle Build Setup: No piecemeal component tracking required; arrives complete with an upper assembly, blowback BCG, full lower parts kit, dedicated weighted PCC buffer system, and a 6-position adjustable carbine stock.

Why Choose This Product?

Building a reliable .40 S&W carbine often introduces component matching and extraction hurdles due to differing feed ramps and bolt masses. Pro2A Tactical removes the structural confusion from custom builds by providing a fully matched barrel, heavy blowback carrier, and a specifically weighted PCC recoil buffer in one complete bundle. This premium, American-made kit yields maximum operational consistency, flat paths, and superior reliability right out of the box, allowing you to share magazine and ammunition configurations with your sidearm flawlessly.