The Meprolight Micro RDS Red Dot Sight for Sig 226 320 is small, rugged, and energy efficient, with a clear aiming point for all light conditions, and a large display window. For pistols, it serves as the main aiming sight, offering fast target acquisition at close distances. It fits a large variety of handguns thanks to its patented quick release mounting MEPRO MicroRDS adaptor. The adaptor allows the use of an optical sight alongside an included backup tritium night sight. There is no need to replace the guns slide or to drill holes to install the optical sight.