Universal Compatibility: Compatible with Osight SE, Osight S, 407K/507K/EPS Carry, supports RMSc and K footprints red dot sights from other brands. Optic Footprint Conversion: Converts RMR footprint to RMSc footprint. Durable SUS420 Stainless Steel Material: Made from SUS420 stainless steel and by adopting CNC integrated machining, with PVD (Physical Vapor Decomposition) matte black coating for excellent wear resistance. Quick & Easy Installation: Includes mounting screws and installation tool for swift and convenient installation. * Note: RMR is a registered trademark of Trijicon, Inc., and is used solely to indicate compatibility. No affiliation or endorsement is implied.