PRO2A 16" 6.5 Grendel 1/8 Mid Length NR Side Charging Melonite M-LOK AR-15 Upper Kit
Product Overview
The PRO2A 16" 6.5 Grendel Mid Length NR Side Charging Master Upper Kit shifts long-range precision into a highly ergonomic, human-centric form factor. Built around the revolutionary Gibbz Arms G4 Non-Reciprocating (NR) side-charging billet receiver, this setup ditches the traditional rear charging layout so you can manipulate the action without shifting your cheek weld or knocking large hunting optics. Engineered as a complete all-in-one building box, it pairs a premium Type II Bolt Carrier Group (BCG) and Lower Parts Kit (LPK) with custom-buffered rear extension hardware—delivering flat-shooting, medium-game supremacy directly out of the box.
Key Features
- All-Inclusive Master Build Kit: Bundles the complete barreled upper receiver with a premium bolt carrier group, charging handle, full lower parts kit, and rear receiver stock assembly.
- Non-Reciprocating Side Charging Mechanics: Advanced static side-charging mechanism handle remains fixed forward during cycling, shielding the operator's line of sight and clearing low-set thermal hunting scopes or large optics.
- 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) — Heavy Profile |
| Twist Rate / Feed Ramps | 1:8 Twist / M4 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 |
| Bolt Carrier Group (BCG) | M16 Profile Full-Auto Capable, 8620 Carrier, 9310 Steel Bolt (Type II / MPI Tested), Nitride Finish Side-Engagement Key |
| Lower Parts Kit (LPK) | Complete AR-15 Lower Parts Kit (Standard Milspec ELG Trigger / Fire Control Group, Pistol Grip, Detents, Springs, Pins, and Safety Selector) |
| Stock & Buffer Assembly | Premium Adjustable M4 Stock, Mil-Spec Receiver Extension Tube, Carbine Recoil 3oz Buffer, and High-Tensile Buffer Spring |
| 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?
Pushing a distance cartridge like the 6.5 Grendel to its true potential requires substantial glass, which traditionally creates zero clearance for a rear charging handle. Pro2A Tactical brilliantly removes this bottleneck with the Gen 2 static side action. By combining this flawless workspace with a custom-headspaced Type II Nitride carrier group and an exactingly tuned mid-length gas system, this master kit removes standard assembly trial-and-error—yielding absolute, long-range field confidence in a singular bundle.
