PRO2A LEFT HAND 5" 300 Blackout 1/5 Micro Length Melonite M-LOK AR-15 Upper with Flash Can

Product Overview

The PRO2A LEFT HAND 5" 300 Blackout 1/5 Micro Length Melonite M-LOK AR-15 Upper with Flash Can offers a micro personal defense weapon (PDW) configuration optimized for southpaw operators. Chambered in the adaptable .300 AAC Blackout cartridge, this upper receiver assembly features a true mirror-image left side ejection port to throw expanding gas blowback and spent brass completely away from your sightlines. Built on a microscopic 5-inch footprint, this assembly utilizes an ultra-fast 1/5 twist rate to guarantee proper rotational stabilization for heavy subsonic payloads out of short barrels. To manage the massive muzzle blast inherent to ultra-short setups, an integrated linear Flash Can is tucked cleanly inside the free-float rail.

Key Features

True Left-Hand Architecture: Left-side ejecting configuration paired with a matched left-handed bolt carrier group safely redirects carbon blowback and blistering spent casings entirely out of southpaw sightlines.
Ultra-Fast 1/5 Twist Rate: Precision-rifled profile specifically engineered to stabilize heavy subsonic hunting and defensive projectiles from sub-compact barrels, preventing bullet keyholing.
Linear Flash Can Muzzle Device: Tames severe short-barrel muzzle blast by forcing sound pressure, thermal expansion, and aggressive concussive shock waves directly downrange away from the operator.
Micro-Agile 5-Inch Profile: Yields maximum handling agility, easy storage, and fast target transitions across close-quarter environments and vehicle interiors.
QPQ Melonite Barrel Protection: Premium Salt Bath Nitride coating hardens internal rifling and external steel surfaces to provide excellent friction reduction and all-weather corrosion defense.
Slim Free-Float Handguard: Enhances intrinsic accuracy by isolating barrel harmonics while supplying modular M-LOK attachment slots and an expansive top Picatinny rail.

Technical Specifications

Receiver Orientation:	True Left-Handed / Left Ejection Port Architecture
Muzzle Device:	5/8-24 TPI Slimline Linear Flash Can (Blast Forwarder Device) Tucked Under Rail
Caliber / Chamber:	300 AAC Blackout (300 BLK)
Barrel Length & Contour:	5 Inches Micro Profile Taper
Barrel Material:	4150 Chrome Moly Vanadium Steel - Made for us by Tactical Kinetics
Twist Rate:	1:5 Twist
Barrel Coating Finish:	QPQ Melonite / Black Nitride Corrosion-Resistant Exterior and Interior Lining
Gas System Length:	Micro Pistol-Length Gas System with 0.750" Low Profile Gas Block
Upper Receiver Type:	Left-Hand Specific Billet Aluminum Receiver Layout (Type III Hardcoat Anodized)
Handguard Profile:	6.5 Inch Slim Free-Float Modular M-LOK Rail Layout (Extended layout to partially tuck Flash Can)
Manufacturing Origin:	100% Proudly Made in the USA

Why Choose This Product?

Building an ultra-compact personal defense weapon as a left-handed shooter usually introduces frustrating trade-offs. Standard right-handed receivers dump unburnt powder and high-pressure exhaust gases directly across your line of sight. This problem multiplies when cutting barrel length down to a micro 5-inch footprint. The PRO2A Left Hand 5" 300 Blackout Upper completely solves these operational hurdles. By routing spent brass and gas away from your vision via the specialized left-ejecting chassis, you retain total downstream clarity.Furthermore, standard slow twist rates fail to stabilize heavy, ultra-efficient subsonic match ammunition when fired from short platforms. This upper features an ultra-fast 1/5 twist barrel that spins the projectile up to speed instantly, protecting your accuracy and targets from keyholing or stability loss. Complete with a linear flash can that channels sound pressure safely downrange away from your ears, this complete upper receiver assembly offers southpaw operators an uncompromised, clean-operating micro powerhouse straight out of the box.