The Tandemkross Cornerstone Safety Thumb Ledge for the Ruger Mark IV is expertly designed to enhance your shooting experience. Finished in sleek black this thumb ledge offers an ergonomic design that provides improved grip and control. Specifically crafted for the Ruger Mark IV it seamlessly integrates with the firearm's design ensuring both aesthetics and functionality are maintained. Elevate your shooting precision and comfort with this essential upgrade perfect for both competitive shooters and firearm enthusiasts.