Product Description The Cobalt Kinetics CK-Pro 13" Upper Receiver Group (URG) in CK Green delivers precision engineering and premium construction for AR-platform rifle builds. Crafted from high-quality aluminum and finished in Cobalt Kinetics&'; distinctive CK Green, this upper receiver group is purpose-built for shooters who demand reliable performance and a refined aesthetic. The 13" configuration provides a versatile balance of maneuverability and ballistic efficiency, making it well-suited for a variety of tactical and recreational shooting applications. As a product of Cobalt Kinetics&'; exacting manufacturing standards, this URG is a standout choice for those looking to upgrade or complete a high-performance rifle build. Product Highlights Premium Aluminum Construction: Built from durable, lightweight aluminum for a reliable, long-lasting upper receiver group. CK Green Finish: Features Cobalt Kinetics&'; signature CK Green receiver finish for a distinctive and professional appearance. 13" Barrel Length: Optimized 13" configuration balances handling, accuracy, and velocity for versatile use scenarios. CK-Pro Platform: Part of Cobalt Kinetics&'; CK-Pro lineup, engineered to meet the demands of serious shooters and enthusiasts. Drop-In Compatibility: Designed for compatibility with standard AR-15 lower receivers, simplifying installation and customization. Specs Brand: Cobalt Kinetics Model: CK-Pro MPN: CK-PRO-URG-13-S-CKG UPC: 850060560460 Firearm Type: Rifle Product Type: Upper Receiver Group (URG) Barrel Length: 13" Barrel Length Range: 13" to 13.99" Receiver Material: Aluminum Receiver Finish: CK Green 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. ]]>