FN should develop a small carbine with 18.5" barrels that takes FN Five-Seven magazines. Semi-automatic only ofcourse.
Reason being is we Canadian's can use 10 round magazines in that case and it would be non-restricted so can be used for varmint hunting.
Actually I'm surprised at the use of the P90 carbines. I wouldn't have thought they'd have went with a special magazine for their PDW. After all Pilots and mechanized armored divisions would have some sort of issued pistols (at least in limited quantities with the PDW's). So having the ability for a longer reach of a carbine/rifle and being able to in a emergency use their pistol magazines would be handy in my opinion.
Heck in Ontario it would be a legal big game hunting rifle.
Dimitri