Interesting round, anybody see this one yet? [link]http://remtek.com/arms/fn/57/[/link]

If it the 5.7mm x ? or something like that ,I think I saw that it was police only ,because the ammo was desined to punch thru a bullet proof vest .

I thought so too John but cdnn investments sells them in their catalog and say it's alright now to sell to anybody. Something different I suppose, seems a little high maintainence though . I have a CZ-52 that will shoot a machine gun round much like the FN 5.7mm. Not much use for it but the price was right and it's darn fun to shoot!