Product Description The Cobalt Kinetics CK Pro Upper Receiver Group (URG) is a precision-engineered AR-15 upper assembly designed for shooters who demand exceptional performance and reliability. Chambered in 5.56mm NATO, this URG features a 13.7-inch barrel finished in a striking Black and Flat Dark Earth (FDE) color combination. Built to Cobalt Kinetics&'; exacting standards, the CK Pro URG is ideal for tactical applications, competition shooting, and home defense, delivering a refined fit and finish that sets it apart from standard mil-spec uppers. Product Highlights 5.56mm NATO Chambering: Compatible with both 5.56 NATO and .223 Remington ammunition for maximum versatility in the field or at the range. 13.7" Barrel Length: Compact profile offers a balance between maneuverability and ballistic performance, making it well-suited for close-quarters and general-purpose use. Black/FDE Finish: Dual-tone Black and Flat Dark Earth finish provides a professional, tactical aesthetic while offering corrosion resistance and durability. Cobalt Kinetics Pro Series Quality: Engineered and manufactured to the high tolerances that define the Cobalt Kinetics Pro product line, ensuring a precise fit and reliable function. Drop-In AR-15 Compatibility: Designed as a complete Upper Receiver Group for straightforward installation on any standard AR-15 lower receiver. Specs Brand: Cobalt Kinetics Model: CK Pro URG Caliber: 5.56mm NATO Barrel Length: 13.7" Color/Finish: Black / Flat Dark Earth (FDE) Platform: AR-15 MPN: CKPROURG556137BFDE UPC: 850060560651 Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer. ]]>