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Leonid Kalashnikov's birth name is Leonid Ivanovich Kalashnikov.
Mikhail Kalashnikov's birth name is Mikhail Timofeyevich Kalashnikov.
Avtomat Kalashnikov= Automatic Kalashnikov
That is the name of the inventor of the weapon. AK stands for Avtomat Kalashnikov. Translates as Kalashnikov Automatic Rifle.
Vitali Kalashnikov died on March 5, 1995, in Chisinau, Moldova of homicide.