Kalashnikov developed AK-47 after serving as Russian tank commander in World War II . CNN recognized AK-47 as the world 's most common machine gun . Simplicity , reliability were hallmarks of gun , Mikhail Kalashnikov told CNN in Monday .
Mikhail Kalashnikov developed AK-47 after serving as Soviet tank commander in World War II . Guinness recognized AK-47 as the world 's most common machine gun . Simplicity , reliability were hallmarks of gun , Kalashnikov told CNN in 2009 .