 Designated as the "9.65mm handgun", the Detective Special was used by the military police officers of the Japanese Self-Defense Forces along with the M1911 pistol designated as the "11.4mm handgun", only to be replaced by the Minebea P9 semi-automatic pistol, the Japanese license-made SIG Sauer P220.And a small number were used in some prefectural police headquarters of Japan including the Tokyo Metropolitan Police Department.The six-shot Colt Detective Special was the standard issue sidearm of Crime Wing inside Hong Kong Police Force, only to be replaced by SIG Sauer P250 after multiple years of use.