PRO2A 5.5" 10mm 1/16 Pistol Caliber NR Side Charging Melonite M-LOK Upper

Description

The Pro2A Tactical 5.5-inch 10mm Auto Non-Reciprocating (NR) Side Charging Complete Upper Receiver assembly unleashes high-power hard-hitting performance within a hyper-portable, lightning-fast platform. Assembled by hand and verified under rigorous quality specifications in Georgia, this upper upgrades weapon control by replacing the traditional rear charging handle with an advanced, static side-charger mechanism. Utilizing an ultra-compact 5.5-inch Melonite barrel calibrated for high-velocity heavy loads, it provides a premium drop-in solution for personal defense setups, vehicle deployment, or back-country tracking protection.

Key Features

• Non-Reciprocating Side Charging: Enhances deployment leverage with a left-side charging handle that stays static while cycling, preventing optics obstruction and knuckle interference.
• Compact 10mm Auto Power: Delivers the superior downrange kinetic energy of the 10mm cartridge out of an agile 5.5-inch barrel configuration built for quick tracking in close environments.
• Straight Blowback Reliability: Engineered completely without gas blocks or gas tubes, dropping complex wear points to guarantee steady feeding and extraction cycles with heavy loads.
• Premium Melonite Hardness: The 4150 steel barrel is treated inside and out with an ultra-hard Melonite finish, providing extreme corrosion resistance and an easily cleaned bore surface.

Technical Specifications

Why Choose This Product?

Stepping up to a side-charging layout dramatically changes operational speed and leverage on hard-hitting pistol-caliber platforms where frame real estate is limited. The Pro2A 5.5" 10mm NR Side Charging Upper Receiver matches its premium billet architecture to a factory-headspaced blowback bolt configuration to handle high cyclic chamber pressures safely and smoothly. Engineered with a revised feed cone optimized for heavy hard-cast and high-expansion defense rounds alike, it eliminates feeding hiccups natively. It is the definitive choice for operators searching for custom-tier rigidity and ultimate portable stopping power.