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 . There 's simply no time to figure how to operate a complicated weapon and press many buttons when the enemy is advancing on you . '' Simplicity , reliability were hallmarks of gun , Mikhail Kalashnikov told CNN in Monday .
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 .