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Maximize your velocity scaling, terminal energy retention, and extended mid-range precision on standard AR platforms. The PRO2A 22" 6.8 SPC II Rifle Length Upper Assembly is meticulously engineered to stretch the full performance envelope of this intermediate hunting and tactical cartridge. Built around a premium forged 7075-T6 aluminum receiver with standard right-side ejection configuration tolerances, this system centers on an elongated 22-inch medium profile barrel. The 1:11 twist rate and Spec II chambering combine to safely handle standard factory hunting loads and high-performance tactical variants with minimized pressure margins. A smooth direct impingement rifle-length gas setup ensures an incredibly soft, uniform mechanical cycling stroke, while an extended 15-inch free-float aluminum handguard wraps the barrel to supply absolute structural rigidity and massive attachment space for precision optics and supporting bipod structures.
| Caliber / Chambering | 6.8 SPC II (SPEC II Chamber / Intermediate Hunting Cartridge) |
|---|---|
| Upper Receiver Housing | Milspec Forged 7075-T6 Aluminum, M4 Feed Ramps, Forward Assist & Dust Cover, Type III Hardcoat Anodized Black |
| Barrel Length / Steel | 22 Inches / 4150 Chrome Moly Vanadium (CMV) Structural Steel |
| Barrel Finish & Profile | QPQ Melonite / Black Nitride Finish (Internal & External) — Medium Profile |
| Twist Rate / Feed Ramps | 1:11 Twist Rate / Precision Machined M4 Feed Ramps Optimized for Reliable Intermediate Cartridge Feeding |
| Gas System Mechanics | Rifle Length Direct Impingement with a 0.750" Low-Profile Steel Gas Block |
| Handguard System | 15-Inch Free Float Slim Profile 6061-T6 Aluminum Modular M-LOK Rail with Continuous Top Picatinny Real Estate |
| Muzzle Configuration | Standard A2 Flash Hider / 5/8x24 TPI Thread Pitch |
| Manufacturing Origin | 100% Designed, Machined, and Assembled in the United States |
| Warranty Coverage | Protected by Pro2A Tactical's Structural Lifetime Warranty |
The 6.8 SPC II round delivers superior downrange kinetic energy thresholds that clearly eclipse standard 5.56 ammunition formats, filling the perfect sweet spot for mid-size game hunting and precision targets. Utilizing a 22-inch barrel allows long-range marksmen to extract every ounce of powder velocity available, guaranteeing flatter trajectory mapping. Pro2A Tactical simplifies your precision rifle configuration project by supplying a premium upper system built with strict quality control. It provides maximum muzzle compliance and exceptional field consistency right out of the box.
| SKU | P2A68GFS15RIF22-TK |
|---|---|
| Barrel Length | 22 inch |
| Rifle Caliber | 6.8 SPC II |
| Manufacturer | Pro2A Tactical |