PRO2A 10.5" 350 Legend 1/16 Pistol Length Melonite M-LOK AR-15 Upper Kit
Product Overview
The PRO2A 10.5" 350 Legend Upper Kit strikes the ideal balance between compact maneuverability and enhanced ballistics. Purpose-built for the straight-walled 350 Legend cartridge, this upper features a premium liquid-nitrocarburized barrel combined with a rugged Mil-Spec charging configuration.
Key Features
- Ultra-Compact Profile: 10.5-inch medium profile barrel configuration delivers massive close-range kinetic energy transfer from a highly maneuverable, lightweight footprint.
- Straight-Wall Compliance: Specifically optimized for the 350 Legend cartridge, making it an excellent compact choice for states or zones with restrictive straight-wall firearm hunting mandates.
- 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 9-inch free-floating M-LOK handguard for rigid optics and accessory mounting stability.
Technical Specifications
| Caliber / Chambering | 350 Legend (Straight-Walled Cartridge) |
|---|---|
| Barrel Length / Steel | 10.5 Inches / 4150 Chrome Moly Vanadium (CMV) Steel |
| Barrel Finish & Profile | QPQ Melonite / Black Nitride (Internal & External) — Medium Profile |
| Twist Rate / Feed Ramps | 1:16 Twist / Engineered Single-Large M4 Feed Ramp Profile for Reliable Straight-Wall Case Feeding |
| Gas System Mechanics | Pistol Length Direct Impingement with a 0.750" Low-Profile Steel Gas Block |
| Upper Receiver Housing | 7075-T6 Forged Aluminum, Mil-Spec M4 Profile, Type III Hardcoat Anodized, Forward Assist & Dust Cover |
| Handguard System | 9-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?
The 10.5-inch barrel structure optimizes power and velocity metrics for the 350 Legend while preserving a small tactical footprint. Built with tailored feeding architecture to completely eliminate cycling bottlenecks, this kit provides hunters and sport shooters in strict straight-wall zones with premium, reliable performance straight from the box.
