The Talley RMRSX4 Base offers a robust, precision-machined mounting solution for Trijicon RMR and other RMR-footprint optics on Winchester SX2, SX3, and SX4 shotguns. Designed for a secure, repeatable fit, this base provides excellent stability and maintains zero even under the hard recoil of high-performance semi-auto shotguns. Its low-profile construction delivers optimal sight height for quick, intuitive target acquisition, making it a great upgrade for hunting, sporting clays, or defensive applications. Built specifically for the Winchester SX series, the Talley RMRSX4 ensures reliable, long-lasting performance with modern miniature red-dot optics.