Product Overview

The PRO2A LEFT HAND 16" 300 Blackout 1/7 Pistol Length NR Side Charging Melonite M-LOK AR-15 Upper Kit is a fully comprehensive, mirror-engineered master build package purpose-built to deliver premium ergonomics and high-performance cycling for left-handed operators. Centered around a **Left-Eject Non-Reciprocating (NR) side-charging billet receiver**, this system isolates manual handle movement from internal cycling parameters while routing spent brass safely away from southpaw operators. The full 16-inch barrel configuration ensures complete velocity potential out of the .300 AAC Blackout cartridge while maintaining instant compliance for standard non-NFA rifle setups. Fully populated with a matching left-handed full-auto profile bolt carrier group, dedicated side-charging handle assembly, low-profile pistol-length gas loop, complete lower parts matrix, and an adjustable rifle stock assembly, this kit removes all component matching guesswork entirely.

Key Features

• All-In-One Complete Kit Pipeline: Consolidates your entire shopping list by providing the internal left-hand cycling mechanics, fire control group, lower frame small parts, and stock kit furniture inside one premium assembly order.
• True Left-Hand Architecture: Engineered with a dedicated left-side ejection port to prevent face-directed hot brass and gas blowback exposure for southpaw shooters.
• Non-Reciprocating Right-Side Ergonomics: The charging handle stays completely stationary when firing, preserving your optic sight lines, mitigating optical obstruction, and accelerating manual cycle workflows.
• Optimized Pistol-Length Gas System: Specifically configured to manage gas dwell times perfectly on a 16-inch barrel setup, ensuring flawless cycling with both standard supersonic and heavy subsonic ammunition options.
• Full 16-Inch Rifle Compliant Profile: Squeezes out excellent downrange ballistic velocity and flat trajectories while avoiding NFA short-barrel registry requirements right out of the box.
• Precision 1:7 Twist Stabilization: Highly optimized to reliably stabilize a wide spectrum of multi-grain ammunition setups, from lightweight hunting profiles to heavy-grain defensive rounds.
• Sub-Surface Melonite QPQ Armor: Liquid-immersion nitriding infuses deep surface protection across the 4150 CMV steel barrel core, safeguarding critical lands and grooves from harsh throat attrition and humidity.
• Free-Floating M-LOK Handguard: Features a slim-profile modular rail system aligned flat with the upper receiver top rail, optimizing accessory and bipod placement without shifting your barrel's point of impact.

Technical Specifications

Why Choose This Product

This master package represents a significant leap forward for southpaw builders tired of modified right-hand operations on full-length rifle builds. By integrating a dedicated left-eject receiver pathway with a non-reciprocating cocking handle layout, it completely eradicates face-directed gas blowback and unnatural manual manipulation. Transitioning weapon indexing to a fixed left-side lever removes the awkward mechanical controls of standard rear charging latches underneath large optics footprints, keeping manipulation workflows natural and fast. Built with a pistol-length gas system that cycles seamlessly on an optimized 16-inch barrel profile, this setup achieves absolute reliability across supersonic and subsonic envelopes without parsing extraction failures. Packed with premium treated components from the dedicated left-hand full-auto profile bolt assembly down to the polished fire control links, this configuration ensures reliable precision performance out of the box. 100% proudly manufactured in the USA.