PRO2A 16" 6.5 Grendel 1/8 Mid Length NR Side Charging Melonite M-LOK AR-15 Upper
Product Overview
The PRO2A 16" 6.5 Grendel Mid Length Barreled Upper Receiver matches serious long-range ballistic capability with cutting-edge upper ergonomics. Built around a premium Gibbz Arms G4 Non-Reciprocating (NR) side-charging billet receiver, this setup eliminates the traditional rear charging architecture to maximize clearance for large optic mounts and scopes. Featuring a 16-inch medium-profile Melonite barrel utilizing a mid-length gas system, this drop-in replacement upper provides stable velocities and a smooth recoil impulse optimized for hunting and precision sport shooting.
Key Features
- Ultra-Compact Profile: 16-inch heavy target barrel configuration delivers massive close-range kinetic energy transfer from a highly maneuverable, lightweight footprint.
- Precision Distance Optimization: Specifically optimized for the 6.5 Grendel cartridge, ensuring exceptional downrange external ballistics and energy retention from a balanced, mid-length configuration.
- QPQ Melonite Extreme Armor: Barrel bore, chamber, and exterior are fully liquid nitrocarburized to exceed mil-spec chrome lining in surface hardness, heat dissipation, and corrosion resistance.
- Slim Profile M-LOK Workspace: Features a continuous top Picatinny rail interface seamlessly blended into a 15-inch free-floating M-LOK handguard for rigid optics and accessory mounting stability.
Technical Specifications
| Caliber / Chambering | 6.5 Grendel (Type II Chamber Configuration) |
|---|---|
| Barrel Length / Steel | 16 Inches / 4150 Chrome Moly Vanadium (CMV) Steel |
| Barrel Finish & Profile | QPQ Melonite / Black Nitride (Internal & External) — Medium Profile |
| Twist Rate / Feed Ramps | 1:8 Twist / M4 Extended Feed Ramps Engineered for Precision Feeding Reliability |
| Gas System Mechanics | Mid-Length Direct Impingement with a 0.750" Low-Profile Steel Gas Block |
| Charging System | Left-Side Non-Reciprocating Handle Assembly (Gen 2 Handle Components Included) |
| Upper Receiver Housing | Gibbz Arms G4 Non-Reciprocating (NR) Side Charging Billet Aluminum, Type III Hardcoat Anodized |
| Handguard System | 15-Inch Ultra-Lightweight Free-Float Aluminum M-LOK Rail System |
| Muzzle Configuration | Standard A2 Flash Hider / 5/8x24 TPI Thread Pitch |
| Manufacturing Origin | 100% Designed, Machined, and Assembled in the United States |
| Warranty Protection | Backed by Pro2A Tactical's Structural Lifetime Warranty |
Why Choose This Product?
Running a high-performance distance cartridge like the 6.5 Grendel typically demands substantial, high-magnification glass. Standard rear charging setups create severe clearance conflicts with low scope rings or large thermal optics. Pro2A Tactical solves this dilemma by applying a static, left-side manual handle architecture featuring Gen 2 structural components. Paired with a soft-shooting mid-length gas block and heavy QPQ barrel, it yields a rugged, flat-shooting platform that ensures rapid cycling and absolute field dependability.
