This Colt Mfg optic plate is precision-engineered specifically for 1911 pistol platforms. Constructed from high-strength stainless steel with a black nitride finish, it provides excellent durability and corrosion resistance. Designed to fit the Trijicon RMR footprint, this base style adapter plate provides a rock-solid rail interface mounting method for secure red dot optic attachment to your firearm. Safety Note Always ensure the firearm is unloaded before installing or adjusting optics or bases. Verify proper torque specifications during installation to ensure safe and secure operation.