World's Smallest Gun

I thought the hysteria over a pink rifle was bad. Check out the latest sensationalized, exaggerated gun story in the media: Introducing the world's smallest gun that fires deadly 300mph bullets - but is just two inches long. "Meet the pistol that fits in your pocket - and packs a hell of a punch. The SwissMiniGun is the size of a key fob but fires tiny 270mph bullets powerful enough to kill at close range.
"Jonathan Spencer, consultant forensic scientist and firearms expert, said that although the gun, which fires bullets at a speed of 399 feet a second, was tiny, it could still prove fatal and in the eyes of the law was as dangerous as a machine gun."
It is capable of killing someone. Under section 5 of the Firearms Act it would be a prohibited weapon. It would be on the same scale as a machine gun. Wow, that is quite the sensational story. Tiny bullets that travel 300 miles per hour! Well since bullet velocity is normally measured in feet per second (fts) lets put this menace to society in perspective with a little basic math:
1 mile = 5280 feet
1 hour = 3600 seconds
5280 feet X 300 miles = 1584000 feet per hour
1584000 fph / 3600 sec = 440 fps
Ok, so in less sensational terms this tiny rimfire gun fires 2.34mm bullets at 440 fps and costs between $5,952.00 for the basic model, and up to $59,529.00 dollars for the extravagant 18 caret gold and diamond encrusted version. However, I always wonder about one thing and asking myself, why the gun inventor invented this kind of gun?? Are they want the people kill each other or as a protection??