The 10 meter air pistol is an Olympic shooting event governed by the International Shooting Sport Federation (ISSF). It is similar to 10 meter air rifle in that it is shot with 4.5 mm (or .177) caliber air guns at a distance of 10 metres (11 yards), and that the match consists of a qualification round of 60 competition shots within 75 minutes. If an Electronic Scoring System (EST) is not available, 15 minutes are added to the time limit. Competitors are allowed to shoot an unlimited amount of shots during the 15 minutes preparation and sighting time. Along with the 50 meter pistol, it is considered a precision shooting event. Thus, numerous shooters compete in both events. There are some restrictions on the pistol regarding its dimensions, weight and trigger pull weight. It must be operated by one hand only from a standing, unsupported position. The shooter decides his or her own tempo as long as the maximum time is not exceeded. After the qualification round, the shooters with the top eight scores move on to a final round consisting of 24 competition shots. After the tenth shot, individual commands are given so that the audience may follow the progress of the standings. The major competitions are the Olympic Games every four years and the ISSF World Shooting Championships every four years. In addition, the event is included in ISSF World Cups and in continental championships, as well as in many other international and national competitions. It is an indoor sport and, at the highest level, electronic targets are used instead of the traditional paper targets. Range and target The distance from floor level to the centre of the target is 1400mm +/- 50mm. The air pistol range is the same as the air rifle range, giving each shooter a table, a 1 meter wide firing point, and a 10-meter distance between the firing line and the target line. The current rules require ranges to be built indoors, with specified minimum requirements for artificial lighting. Many of the top-level competitions are held at temporary ranges installed in versatile sporting facilities or convention centers. The target, 17 by 17 cm (6.7 by 6.7 in), is traditionally made of light-coloured cardboard upon which scoring lines, and a black aiming mark consisting of the score zones 7 through 10, are printed. There is also an inner ten ring, but the amount of