The Cobalt Kinetics Cobalt Ck-Pro-Urg-556-137-B-Fde 13.7" Ck Pro Urg is a complete AR-15 upper receiver group built for shooters who want a refined, ready-to-run 5.56 NATO upper. Finished in a flat dark earth tone with a full-length top rail and extended free-float handguard, it offers a sleek profile and modern ergonomics while maintaining compatibility with standard AR-15 lower receivers.

This 13.7" upper is well suited for range use, training, and general-purpose shooting where a balanced length and controllable recoil are preferred. The free-float design supports consistent accuracy, while the included muzzle device helps manage blast and recoil. Paired with a quality lower, it becomes a versatile platform that reflects Cobalt Kinetics’ focus on precision machining and thoughtful design.

Key Features:

• Manufacturer: Cobalt Kinetics
• Model: CK-PRO-URG-556-137-B-FDE 13.7" CK PRO URG
• Category: Complete Upper Receiver
• Caliber: 5.56x45mm NATO
• Barrel Length: 13.7"