In the book by Viktor Suvorov about structure of Russian military he describes a knife use by russian speical forces. It's a knife with spring loaded handle that by push of the button ejects the blade that can strike the traget 20-30 feet away. This guy also describes some really intense and unbelivable stuff so at points I began to doubt him. Also I remember that when I was a child we bought a lot of russian equipment on the border. I came across vast variety of gear but not a knife like that. Is it real?

Matt