PRO2A LEFT HAND 12.5" 300 Blackout 1/8 Pistol Length NR Side Charging Melonite M-LOK AR-15 Upper

Product Overview

The PRO2A LEFT HAND 12.5" 300 Blackout 1/8 Pistol Length NR Side Charging Melonite M-LOK AR-15 Upper introduces uncompromised southpaw ergonomics and multi-purpose adaptability to the compact AR platform. Built around a premium 12.5-inch 4150 CMV steel barrel, this upper extracts excellent velocity profiles out of both subsonic hunting cartridges and heavy-grain defensive loads. Incorporating an elite mirrored left-ejecting Non-Reciprocating (NR) side-charging handle, this system gives left-dominant marksmen smooth, visual configuration control without standard rear T-handle limitations or unburned facial blowback.

Key Features

True Left-Handed Mirrored Design: Mirrored left-ejection port redirects spent shell casings and escaping cylinder pressure away from the operator's line of sight and face.
Non-Reciprocating Right Side Charging Handle: Manual charging lever remains entirely static during live fire sequences, clearing crucial workspace and preventing optic hardware mount interference.
Optimized Pistol-Length Gas Port: Meticulously tuned to provide consistent backpressure metrics for smooth cycling performance with subsonic and supersonic ammunition.
Heavy-Duty Melonite Barrel Defense: Liquid QPQ Nitride treatment maximizes land-and-groove core micro-hardness, defending against thermal throat erosion and outdoor environmental elements.
Free-Float Slim M-LOK Handguard: Protects optimal barrel harmonics by remaining independent of the barrel assembly while providing an uninterrupted top Picatinny rail and deep M-LOK accessory attachment slots.

Technical Specifications

Orientation:	True Left-Handed / Left Ejection Port
Caliber / Chamber:	300 AAC Blackout (7.62x35mm)
Barrel Length:	12.5 Inches
Barrel Material:	4150 Chrome Moly Vanadium Steel
Twist Rate:	1:8 Twist
Barrel Coating Finish:	QPQ Melonite / Black Nitride Finish
Gas System Length:	Pistol-Length Gas System Layout with 0.750" Low Profile Gas Block
Receiver Construction:	Gibbz Arms G4 Billet Aluminum Left-Hand Non-Reciprocating Side Charging Upper Architecture (Type III Hardcoat Anodized)
Muzzle Threads & Device:	5/8x24 TPI; Premium A2 Flash Hider
Handguard Interface:	10 Inch Free-Float Ergonomic Slim M-LOK Rail System with Continuous Top Picatinny Rail Layout
Manufacturing Origin:	100% Made in the USA

Why Choose This Product?

This specialized left-handed upper receiver removes the standard ergonomic trade-offs southpaw shooters face when configuring a compact personal defense or short-barrel hunting weapon. By unifying a true left-ejecting billet receiver structure with a left-side non-reciprocating handle, it ensures manual cycling loops remain incredibly fast, natural, and completely clear of variable magnification optic mounts. Regulated accurately on a pistol-length port and finished with a robust Melonite lining, this premium assembly ensures sub-MOA reliability, zero unburned facial casing blowback, and field-tested structural resilience.

SKU	P2ALNR300BLKBW10PIS125-TK
Rifle Caliber	300 Blackout
Manufacturer	Pro2A Tactical