The AT-3 (Sagger) is a Russian 120 mm anti-tank guided missile. It has a flight speed of 120m/s and a range of 3000 meters. The original AT-3 was introduced during the late 1960s and was joystick guided which required a high degree of gunner skill. During the 1970s it was redesigned to optical guidance, whereby the gunner just needs to keep the target in sight. Research AT-3