PRO2A 16" 6.5 Grendel 1/8 Mid Length Melonite M-LOK AR-15 Upper Kit
Product Overview
The PRO2A 16" 6.5 Grendel Mid Length Master Upper Kit combines serious long-range ballistic capability with an all-inclusive build configuration. Built around a Mil-Spec forged receiver housing, this platform optimizes the popular 6.5 Grendel cartridge utilizing a mid-length gas system to guarantee smooth cycling and reduced component wear. This comprehensive package fully populates your custom build requirements out of the box, bundling a premium Bolt Carrier Group (BCG), a Mil-Spec lower parts kit (LPK), standard charging handle, and a complete rear receiver buffer and stock assembly.
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 or pistol brace assembly.
- 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 |
| Upper Receiver Housing | Forged 7075-T6 Aluminum, Mil-Spec M4 Profile, Type III Hardcoat Anodized, Forward Assist & Dust Cover |
| 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, Correct Type II Bolt, Case Hardened 8620 Steel Carrier, 9310 Steel Bolt (Type II / MPI Tested), Advanced Nitride Finish |
| Charging Handle | Standard Mil-Spec AR-15 Charging Handle |
| 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 | 6 Position 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?
Building a high-performance long-range rifle shouldn't require matching countless secondary internal springs, pins, and specific bolt faces. Pro2A Tactical eliminates component confusion by pairing a match-grade 1:8 twist QPQ Grendel barrel with a perfectly headspaced Type II Nitride bolt carrier group. Completely packaged with standard Mil-Spec lower assembly internals and a clean free-float handguard workspace, this master build kit yields flat-shooting, deer-hunting precision straight out of the box.
