FN Herstal stepped way out of the civilian handgun production box when brought to market the 5.7x28mm, which it calls the Five-seveN™ MK2, though most people refer to as the “five-seven.” This relatively new cartridge, with a history of less than 30 years, in combination with the FN pistol, is a promising combination for people looking for greater versatility from a handgun.
The FN Five-seveN MKII is the only model currently in production, the price is staggering at a street price of around $1,300
This is probably due to the law of supply and demand, FN sells every one they produce and it is at times hard to find
It comes in a lockable hard case and with three magazines
The 5.7 pistol has been the subject of tremendous controversy over the years, in fact there was recently a bill introduced into the U.S. House to outlaw the pistol and the cartridge.
Keeping a short list of prospective firearms is dangerous, it's even more dangerous when you have justified the expense and make the journey to the local FFL dealer with your card in your hand. While it's not as bad as it sounds, it is surely something all self-respecting gun owners struggle with. (we need a support group, but no rehab)