While the ballistic knife certainly looks like your garden variety knife, it is anything but that. Open it up at the hilt and you'll see the deadly secret it houses inside: a gun barrel capable of housing six round of .22 caliber ammunition.
This gun knife (or knife gun) is imported by the Las Vegas company Arsenal Firearms and costs $2000. The blade itself measures six and half inches long and should be able to take care of most problems that enter your life, though I suppose it's nice to have the gun option when you find your self in a really tight jam.
With the ballistic knife in your pocket, you'll never have to worry about bringing a knife to a gun fight.