None of them are futuristic or have futuristic functions in the sense that they now exist so before they existed you could call them futuristic but now since they do exist they are no longer futuristic. Anyway, as to their function the FN Five Seven's function is quite a new concept when you take into account the size and speed of the round it fires, supposedly it can defeat many types of body armor and as such you can only get sporting ammunition for it. The Chiappa Rhino with its new design recoils straight back instead of up and that helps with accuracy. I haven't had the opportunity to fire either, not yet, but I've studied reviews on them.