The FAB-250 is a Soviet-designed 250-kilogram (550 lb) general purpose air-dropped bomb with a high-explosive warhead, primarily used by the Russian Air Force, former Soviet republics and customer countries. It is very widespread throughout the Third World and used in many conflicts in Asia and Africa among others. The original M-46 model was rolled out in 1946, followed by the M-54 model 1954 with reinforced structure, both models shaped for internal carriage by heavy bombers, a low-drag M-62 version in 1962 was intended for fighter bomber external hardpoint carriage.The bomb is unguided, features a single nose fuse, and is compatible with most models of Soviet aircraft.[5] The FAB-250 was extensively employed over Afghanistan by Soviet and allied Afghan forces during the 1980s. The FAB-250 has been used most recently over Syria by both Russian and Syrian warplanes