The Cobalt Kinetics CK-Pro Upper Receiver Group is a premium upgrade for your AR-15 platform. Designed for discerning shooters, this 5.56x45mm NATO upper features an expertly crafted 11.50" barrel with a durable Black Cerakote finish. Engineered for exceptional performance, the CK-Pro URG boasts a number of advanced features: Precision-machined components for enhanced reliability and accuracy Optimized gas system tuning for smooth, consistent cycling Lightweight, yet rugged construction to minimize felt recoil Seamless integration with your existing lower receiver Whether you're an avid competition shooter, a dedicated hunter, or a responsible home defender, the Cobalt Kinetics CK-Pro Upper Receiver Group delivers the cutting-edge performance you demand. Meticulously assembled by Cobalt Kinetics' skilled gunsmiths, each URG is thoroughly tested for flawless function before being shipped to the customer.