Boker Kalashnikov 74 Black Automatic Knife Tanto Black. 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. Each large Kalashnikow automatic is boxed in a gift box shaped after an AK magazine. Overall Length: 7.56 in Blade Length: 3.35 in Blade Thickness: 0.12 in Weight: 3.42 oz