The AT-8 (Songster) is a Russian anti-tank guided missile. It was designed to be fired from the 125 mm smooth-bore gun. It uses radio for guidance from the gunner. The AT-8 has a flight speed of 250m/s and a range of 4000 meters. It can penetrate 550 mm of flat steel and 446 mm of sloped steelarmour. The AT-8 Bunker Buster is an American adaptation of their AT-4 anti-tank rocket launcher, for use against fortified targets and for breeching walls. The AT-8 uses the AT-4 disposable tube launcher, pre-loaded with a projectile developed in conjunction with the US Marine Corps. The AT-8 has a range of 250 meters. Research AT-8