Primus1985 said:
You are wrong, a P-90 is classified as an assualt rifle.
Wellllll... Technically the FN P-90 and H&K MP-7 are both considered "PDW" or "Personal Defense Weapon", both made in competition with one another for NATO standard countries armed forces that were looking for a more effective substitute for submachine guns for vehicle crewmen and other tech personal / base workers. I don't think any other guns have that perticular name, but there will probably be more in the future and I think the FN Five-Seven pistol may fall under that classification.
The problem was that while SMGs were adequately effective in the past for such personnel, advancements in body armor rendered the short range, large calibre 9mm parbellum (or .45ACP) cartriges ineffective, whereas smaller caliber, higher velocity ammunition proved to be more effective against kevlar-ed (or like material) covered enemy forces. Both the P-90 and MP-7 have their own proprietary ammunition one of which is approx 5.7mm?
It's kinda hair splitting, to point this out, admittedly, but the whole point of developing these weapons was to find an effective compromise between submachineguns and assault rifles for indirect combat personal, so the confusion is understandable.
tl;dr - P-90 is technically a 'PDW', but you're both right, sorta and the confusion is understandable.