PRO2A 20" 22 ARC 1/7 Rifle Length NR Side Charging Melonite M-LOK AR-15 Upper Receiver Assembly | Pro2A Tactical

PRO2A 20" 22 ARC 1/7 Rifle Length NR Side Charging Melonite M-LOK AR-15 Upper

Product Description

Unlock extreme high-velocity thresholds, ultra-flat trajectories, and match-grade precision out of a standard semi-automatic small-frame platform while completely elevating your manual weapon manipulation controls. The PRO2A 20" 22 ARC Rifle Length NR Side Charging Melonite M-LOK Upper Assembly is expertly engineered to fully exploit the hyper-velocity attributes and high ballistic coefficients of Hornady's 22 Advanced Rifle Cartridge (ARC). Shifting away from a traditional rear charging design, it implements a left-side non-reciprocating side charging handle layout that remains completely stationary while live rounds cycle, preserving absolute shooting safety and protecting the operator's forward hand grip. Configured on a premium billet aluminum receiver with a right-side ejection layout, this complete upper receiver houses a premium 20-inch 4150 CMV barrel. The aggressive 1:7 twist rate provides immaculate rotational stabilization for long, heavy, low-drag 22-caliber projectiles favored in long-range precision disciplines. Operating on a tuned rifle-length gas system to ensure highly regulated gas pressures, optimal dwell times, and soft, uniform mechanical tracking, this turnkey system slides seamlessly onto your standard AR-15 lower receiver setup to complete a premier varmint tracking or PRS build.

Key Features

Non-Reciprocating Side Charging Action: Intuitively positioned on the left side of the receiver, this mechanism lets you cycle the bolt while keeping your hand secure on the main pistol grip, staying completely fixed during live cycling to prevent handguard interference or sight-picture disruption.
Elongated 20-Inch Ballistic Mastery: Maximizes complete powder burn efficiency for the 22 ARC cartridge, yielding an absolute velocity premium over shorter barrels to flatten far-reaching trajectories.
Aggressive 1:7 Fast Twist Performance: Engineered explicitly to flawlessly stabilize high-BC heavy match ammunition profiles under intense downrange crosswind conditions.
Regulated Rifle-Length Gas Cycling: Softens operating pressure curves and dampens bolt carrier impact speed, providing a linear recoil pulse and prolonging component life.
Liquid Bath Nitride Protection: Full interior and exterior QPQ Melonite barrel coating provides maximum resistance to heat friction, extreme weather elements, and throat erosion.

Technical Specifications

Upper Receiver	Gibbz Arms G4 Billet Aluminum, Non-Reciprocating Left-Side Charging Configuration, Right-Hand Ejection Port, Type III Hardcoat Anodized Black
Charging System	Integrated Left-Side Non-Reciprocating Charging Handle (Stays static when firing)
Barrel Length & Profile	20-Inch Medium Contour
Caliber	22 ARC (Advanced Rifle Cartridge)
Twist Rate	1:7 Twist (Highly optimized for standard to heavy match and hunting projectiles)
Barrel Material	4150 Chrome Moly Vanadium Steel with QPQ Melonite Nitride Finish
Gas System	Rifle Length Direct Impingement with Low-Profile Gas Block
Handguard	15-Inch Free Float Slim Profile M-LOK Handguard Rail System
Muzzle Device	Standard A2 Flash Hider, 1/2x28 Thread Pitch

Why Choose This Product?

The 22 ARC turns the standard small-frame AR-15 platform into a legitimate 1,000-yard competitor, but adjusting your weapon configuration shouldn't force you to break your cheek weld or target focus. Pro2A Tactical removes precision construction variables by providing a fully matched side-charging upper block, an internal Melonite core barrel, and a optional high-pressure type 2 bolt carrier group engineered to run in perfect mechanical harmony. This premium, American-made assembly delivers elite ergonomic handling and heavy downrange energy in a package that drops onto any standard AR-15 lower receiver setup.