Boker Kalashnikov 74 Black Automatic Knife Black Tanto Serrated. Mikhail Kalashnikov was the mastermind behind the famed AK-47 assault rifle. This series of knives were inspired by his designs. These amazing auto knives have blades crafted from AUS-8 stainless steel 3.25" black tanto serrated blade. Each large Kalashnikow automatic is boxed in a gift box shaped after an AK magazine.