This Meprolight USA Shotgun Optics Plate features a durable matte black aluminum construction engineered specifically for Mossberg 930 and 590 shotguns equipped with factory drilled and tapped receivers. Designed with an RMR footprint interface, it provides a direct, low-profile mounting foundation for compatible red dot optics and includes all required mounting hardware for installation. Safety Note Always ensure the firearm is unloaded before installing or adjusting any optics or adapter plates. Verify proper torque specifications during installation. Improper mounting may affect accuracy and safety.