Mikhail Timofeyevich Kalashnikov was a Soviet and Russian lieutenant general, inventor, military engineer, writer, and small arms designer. He is most famous for developing the AK-47 assault rifle and
Kalashnikov, c. 1944
Kalashnikov (right) and Eugene Stoner (left) hold the rifles they designed, taken in May 1990.
Sergei Gavrilovich Simonov was a Soviet firearms designer known for the SKS carbine and the PTRS-41 anti-tank rifle. Simonov is considered one of the fathers of the modern assault rifle.
Simonov during a test of the PTRS-41 anti-tank rifle, firing 14.5×115mm rounds that he himself designed in 1941.