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

Product Description

Maximize the ballistic efficiency, velocity potential, and low-recoil consistency of your favorite pistol cartridge on a carbine platform. The PRO2A 16" 40 S&W Pistol Caliber Melonite M-LOK Upper Assembly delivers custom-shop engineering directly to your Pistol Caliber Carbine (PCC) project. 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 defensive or target loads. Operating on a rugged straight blowback mechanism that eliminates gas blocks and port erosion completely, this turn-key platform arrives fully paired with a matching blowback bolt carrier group. Wrapped inside a rigid 15-inch free-float aluminum handguard, this assembly drops seamlessly onto your dedicated lower receiver to form an exceptional competition, plinking, or home defense carbine.

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.
• 100% Sourced & Assembled in the USA: Built to tight manufacturing metrics in Georgia, backed completely by premium custom-shop engineering quality.

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 and heavy blowback carrier assembly engineered to run in perfect mechanical harmony. This premium, American-made assembly delivers smooth handling and robust structural reliability, allowing you to share magazine and ammunition configurations with your sidearm flawlessly.