PRO2A LEFT HAND 16" 300 Blackout 1/7 Pistol Length NR Side Charging Melonite M-LOK AR-15 Upper

Product Overview

The PRO2A LEFT HAND 16" 300 Blackout 1/7 Pistol Length NR Side Charging Melonite M-LOK AR-15 Upper combines robust full-length rifle compliance with elite ergonomic control optimized specifically for southpaw shooters. Chambered in the hard-hitting .300 AAC Blackout cartridge, this complete upper receiver assembly removes traditional rear charging handle operational constraints in favor of a smooth, Non-Reciprocating (NR) side-charging layout. The true left-side ejection orientation keeps blinding carbon exhaust and spent brass away from your face, providing an exceptionally clean, distraction-free shooting profile at the range or in the field.

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.
Non-Reciprocating Side Charging: Fluid manual control handle remains completely stationary while the action cycles, giving you effortless structural clearance for optics and lasers without moving parts near your hand.
Full 16-Inch Legal Rifle Profile: Eliminates the legal registration requirements of an NFA short-barreled rifle while stretching velocity boundaries for high-performance supersonic ammunition.
Fast 1/7 Twist Rifling: Precision-engineered twist profile ensures excellent stabilization across a versatile array of bullet weights, effortlessly cycling light supersonic ammo and heavy subsonic loads alike.
QPQ Melonite Protective Finish: 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 Modular M-LOK Handguard: Enhances intrinsic accuracy by completely isolating barrel harmonics while supplying modular accessory slots and a continuous top rail.

Technical Specifications

Receiver Orientation:	True Left-Handed / Left Ejection Port Architecture
Charging System:	Non-Reciprocating (NR) Left-Side Charging Geometry
Caliber / Chamber:	300 AAC Blackout (300 BLK)
Barrel Length & Contour:	16 Inches Medium Profile
Barrel Material:	4150 Chrome Moly Vanadium Steel - Made for us by Kinetic MFG
Twist Rate:	1:7 Twist
Barrel Coating Finish:	QPQ Melonite / Black Nitride Corrosion-Resistant Coating
Gas System Length:	Pistol-Length Gas System with 0.750" Low Profile Gas Block
Muzzle Device:	Standard 5/8-24 A2 Flash Hider
Upper Receiver Type:	Gibbz Arms G4 Left Handed Billet Aluminum Side-Charging Receiver, Gen 2 handle (Type III Hardcoat Anodized)
Handguard Profile:	12 Inch Slim Free-Float Modular M-LOK Rail System with Continuous Top Picatinny Rail System
Manufacturing Origin:	100% Proudly Made in the USA

Why Choose This Product?

Traditional right-handed firearms compromise a southpaw operator's comfort by spraying hot gas, debris, and abrasive carbon blast right across their line of sight—an issue that is heavily amplified when firing larger-bore intermediate rounds like the 300 Blackout. The PRO2A Left Hand 16" Side Charging Upper removes these limitations entirely. By integrating a dedicated left-ejecting chassis with a stationary, non-reciprocating side charger, you can cycle the weapon naturally from the shoulder without breaking your optical alignment or losing your cheek weld.Configured with a full 16-inch barrel length, this upper ensures simple, hassle-free rifle assembly without NFA restrictions, making it an excellent platform for a tactical utility tool, hunting setup, or home-defense system. Backed by heavy-duty 4150 steel construction, a high-durability Melonite finish, and a fast 1/7 twist rate built to stabilize everything from lightweight range loads to heavy subsonic ammunition, this upper receiver assembly delivers a clean, reliable, and entirely uncompromised tactical upgrade straight out of the box.

SKU	P2ALNR300BLKAX12PIS16-KM
Barrel Length	16 inch
Rifle Caliber	300 Blackout
Manufacturer	Pro2A Tactical

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