Daniel Defense DD4 RIII URG Upper Receiver Assembly 5.56 14.5in FDE

The Daniel Defense DD4 RIII URG delivers premium performance in a compact, ready-to-fire platform, combining the proven M4A1 RIII URG attributes with a precise 5.56mm chamber and a 14.5-inch barrel finished in a durable FDE coating for reliable field use and striking appearance. Built to meet the demands of serious shooters, this upper receiver assembly integrates seamlessly with compatible lower receivers to offer enhanced accuracy, faster target acquisition, and improved gas management, making it an excellent choice for patrol, sport, and tactical training scenarios. The URG design emphasizes rugged construction, consistent reliability, and clean integration with accessories, enabling shooters to tailor optics, lighting, and aiming solutions without compromising balance or handling. With Daniel Defense's renowned fit and finish, the combination of a reinforced rail interface, precisely machined upper components, and high-performance metallurgy translates to durable operation under harsh environments. Whether upgrading an existing platform or assembling a dedicated rifle setup, this upper delivers the versatility, resilience, and precision needed to maximize shot placement and confidence at range.