PRO2A 20" 308 Win 1/10 Rifle Length NR Side Charging Melonite M-LOK AR-10 Upper

Product Description

The PRO2A 20" 308 Win Rifle Length Non-Reciprocating (NR) Side Charging M-LOK AR-10 Upper Receiver Assembly combines heavy-hitting ballistic authority with advanced ergonomic mechanics. Engineered on a precision-machined billet aluminum receiver, this system eliminates the traditional rear charging handle, opting for a smooth, left-side charging setup that stays stationary while cycling. Its true rifle-length gas infrastructure works in tandem with a 20-inch barrel to flatten long-range trajectories and reduce cyclic operating pressures.

**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 Charging Architecture: Provides enhanced mechanical leverage while keeping the charging handle safely forward and completely static during firing cycles.
Extended Long-Range Performance: The precision 20-inch barrel footprint maximizes internal powder burn efficiencies, ensuring optimal velocities out of heavy-duty .308 Winchester loads.
Rifle-Length Gas System Dynamics: Delivers an extended gas-port distance that substantially lowers bolt carrier slide speeds, resulting in reduced parts wear and a noticeably softer recoil impulse.
Premium Melonite Barrel Finishing: Heavy-duty 4150 CMV steel is liquid nitrided to secure supreme weather resistance, uniform heat dissipation, and an extended bore life.

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 System	Non Recirocating Left Side Charging Handle (Handle Stays Put During Cycling - Opposite side of Ejection Port)
Barrel Length & Profile	20-Inch Heavy Profile
Caliber	308 Winchester (Accepts 7.62x51mm NATO)
Twist Rate	1:10 Twist Rate (Highly optimized for standard 150gr to 175gr+ match projectiles)
Barrel Material	4150 Chrome Moly Vanadium Steel with QPQ Melonite Nitride Treatment - Made by Ballistic Advantage
Gas System	Rifle Length Direct Impingement with Low-Profile Gas Block
Handguard	15-Inch Heavy Duty Free Float Slim Profile M-LOK Handguard Rail System
Muzzle Device	Competition Muzzle Brake (5/8x24 Thread Pitch)

Why Choose This Product?

This premium 20-inch AR-10 assembly updates the traditional high-power semi-automatic platform into an exceptionally ergonomic long-range solution. By moving the charging interface to the left side and ensuring it remains non-reciprocating, shooters can easily cycle the bolt under massive long-range optics without losing their cheek weld. Paired with a soft-shooting rifle-length gas profile and a modular free-float M-LOK handguard, it provides target shooters and hunters with a rigid, high-performance foundation built for maximum downrange consistency.