Product Description

Unleash maximum firepower from an ultra-compact footprint with the complete PRO2A 5" 7.62x39mm Micro Length AR-15 Upper Receiver Kit with Flash Can. Engineered to provide exceptional close-quarters maneuverability without sacrificing mechanical cycling consistency, this master build package tames the heavy muzzle concussion typical of short-barreled x39 platforms. The integrated slimline linear flash can controls extreme chamber pressures by routing concussive energy and hot expansion gases directly downrange away from the operator. Designed as an all-in-one building solution, this kit comes fully populated with an enhanced M16 profile bolt carrier group optimized for 7.62x39 reliability, a mil-spec charging handle, a complete lower parts kit, and a full carbine stock assembly—delivering every required component needed to finalize your stripped lower receiver.

Key Features

• All-Inclusive Master Build Kit: Bundles the complete micro barreled upper receiver and linear flash can with an enhanced bolt carrier group, charging handle, full lower parts kit, and rear stock hardware.
• Ultra-Compact Micro Profile: A premium 5-inch heavy-duty barrel offers an exceptionally small maneuverability profile ideal for personal defense, backpack builds, and tight-clearance tactical tracking.
• Enhanced 7.62x39 Reliability: Outfitted with a specialized M16 profile bolt carrier group featuring an enhanced firing pin to guarantee positive primer ignition on hard-backed steel or surplus ammunition casings.
• Forward-Directed Flash Can: The integrated linear muzzle can tames severe short-barrel concussion lines by capturing blast expansion and routing pressure forces straight down the firing line.
• QPQ Melonite Extreme Armor: Inside barrel bore, chamber throat, and exterior walls are fully liquid nitrocarburized to provide a slick, high-wear surface finish outperforming traditional mil-spec chrome lining.
• Recessed M-LOK Workspace: Features a continuous top Picatinny rail interface seamlessly blended into a premium 4-inch free-floating M-LOK handguard that clean-recesses the muzzle flash can for a unified, modern aesthetic footprint.

Technical Specifications

Why Choose This Product?

The PRO2A 5" 7.62x39 Micro Kit removes the historical frustration of building a reliable short-barreled x39 platform by delivering a perfectly tuned, headspaced mechanical system right out of the box. Tapered cartridges often trigger extraction failures and ignition issues on standard short setups. This configuration eliminates those obstacles completely by pairing widened, polished M4 feed ramps with an advanced M16 Nitride bolt group containing an extended firing pin for hard steel primers. When combined with a custom linear flash can that drives severe short-barrel muzzle blast forward, it turns a traditionally harsh platform into a reliable, flat-shooting personal defense environment. Fabricated completely in America to strict engineering tolerances and protected by a comprehensive Lifetime Structural Warranty, it stands out as an elite choice for your next compact defensive platform expansion.