PRO2A 18" 308 Win 1/10 Rifle Length NR Side Charging Melonite M-LOK AR-10 Upper

Product Overview

The PRO2A 18" 308 Win 1/10 Rifle Length NR Side Charging Melonite M-LOK AR-10 Upper brings elite manipulation ergonomics to the heavy-hitting LR-308/AR-10 platform. Engineered explicitly as a **standalone barreled upper receiver assembly only**, this system centers around an advanced **Non-Reciprocating (NR) left-side charging billet receiver**. By separating manual handle tracking from internal firing cycles, this layout lets shooters manually cycle the action or clear faults without taking their eyes off precision optics or disrupting a solid cheek weld. Anchored by an 18-inch 4150 CMV Melonite barrel and an ultra-smooth rifle-length gas system, the upper assembly provides a smooth recoil impulse to keep you on target easier.

**Designed to go on our Gibbz G10 Lower Receiver for seemless fit and compatibility. May fit other brands DPMS Gen 1 Spec Lowers but may require minor fitting (minor filing especially at the lug area of the upper or lower) to get upper to fit on other AR-10 Lowers**

Key Features

Non-Reciprocating Side Manipulation: Premium forward left-side charging handle remains static during live firing sequences, avoiding optic mount clearance limitations and maximizing mechanical leverage over heavy-caliber components.
Optimized 18-Inch Ballistic Profile: Squeezes out excellent downrange ballistic velocity and flat trajectories from the .308 Winchester cartridge while maintaining a balanced handling weight for hunting and field applications.
Smooth Rifle-Length Gas Subsystem: Significantly lowers pressure velocity spikes, yielding a softened recoil pulse, faster target tracking re-acquisition, and minimal internal component wear compared to over-gassed shorter configurations.
Precision 1:10 Twist Stabilization: Highly optimized to reliably stabilize a broad operational spectrum of multi-grain bullets, tracking seamlessly from standard 147gr range ammunition up to heavy 168gr and 175gr match-tier configurations.
Liquid QPQ Melonite Preservation: Full-immersion liquid nitriding creates an incredibly slick, hard-wearing surface inside the 4150 CMV steel barrel core to handle sustained friction, gas wear, and harsh elemental moisture.
Free-Floating M-LOK Handguard: Features a rigid profile, slim modular rail system aligned flat with the upper top rail, optimizing bipod and accessory attachment options without distorting barrel harmonics.

Technical Specifications

Upper Receiver	Gibbz Arms G10 Billet 7075-T6 Aluminum, DPMS Low Pattern, Non-Reciprocating Side Charging Layout, Type III Hardcoat Anodized Black Finish
Charging Handle	Ergonomic Non-Reciprocating left-Side Handle Assembly (Stays static during firing cycles)
Barrel Length & Profile	18-Inch Heavy Contour Profile
Caliber	.308 Winchester (Safely accepts 7.62x51mm NATO)
Twist Rate	1:10 Twist Rate (Optimized for standard and heavy match-grade projectiles)
Barrel Material	4150 Chrome Moly Vanadium Steel with Premium Melonite/QPQ Treatment - made by Ballistic Advantage
Gas System	Rifle Length Direct Impingement with Low-Profile Gas Block
Handguard	15-Inch Free Float Slim Profile M-LOK Rail System (Ensures clean accessory clearance and bipod stability)
Muzzle Device	Competition Muzzle Brake with Crush Washer (5/8x24 Thread Pitch)

Why Choose This Product

Choosing this standalone 18-inch .308 Win side-charging upper assembly elevates your heavy-caliber rifle past traditional rear-charging operational limits. Moving manipulation to a fixed left-side lever completely isolates face-directed blowback gases away from the shooter while offering total clearance around large long-range optic rings. By focusing purely on a premium billet receiver, an ultra-smooth rifle gas loop, and a precision-rifled 18-inch barrel layout, it allows you to utilize your preferred gear and lower furniture seamlessly. Proudly manufactured 100% in the USA from heavy-duty raw metals, this setup ensures an uncompromising tactical precision response straight out of the box.