The FAB-500 is a Soviet-designed 500-kilogram (1,100 lb) general purpose air-dropped bomb with a high-explosive warhead, primarily used by the Russian Aerospace Forces, former Soviet republics and customer countries. The original M-54 model was rolled out in 1954, shaped for internal carriage by heavy bombers, a low-drag M-62 version in 1962 was intended for fighter bomber external hardpoint carriage. Early models were unguided, with a single nose fuze, and compatible with most models of Soviet aircraft.