We cannot foget what for P-90 was designed. Just someone has checked calendar and saw that 9mm Para is 100 years old and should be retired
But seriously - it was designated for those soldiers, for who carrying "full-sized" weapon is unconfortable, or they just does not need it (and of course to cut costs
) - for instance tank crews, artillery guys, drivers. It is light, portable and has rather big firepower on distances up to 150-200 meters.
And than guys from SF noticed that this little thing with flat trajectory, high-speed bullet and relatively small recoil is sexy
.
And i'm not sure about that, but this cartidge is NATO standard yet ?