Other than the fact that this weapon is very unique, I am not sure it is quite a chocolate and peanut butter moment. In other words, I am not sure this mash-up is necessary. Either way, this cool knife-gun has went from the drawing board to an actual product. When the grip is closed it looks like a pretty standard knife, but inside that handle lies a .22 caliber six shooter gun. This gun is called the RS-1 Hybrid Knife/Gun and is made by Arsenal Firearms ($2,000). Video and more pictures after the break.