25 meter standard pistol is one of the ISSF shooting events, introduced at the ISSF World Shooting Championships in 1970. It has its roots in the conventional pistol competitions developed by the National Rifle Association of America. The standard pistol match is shot with a regular sport pistol (also called a standard pistol) in caliber .22 LR. As with all ISSF pistol disciplines, all firing must be done with one hand, unsupported. The 60-shot match is divided into 5-shot strings with different timings: