Modern Warfare 2019's P90 was lackluster. During Verdansk, it was overlooked. Everything else killed faster, and it had the same damage profile as several assault guns.
If you've played since launch, you've probably seen teammates and opponents utilize this. It's one of the submachine guns you should level before Warzone 2.
The Fennec (Vector) Is back for another year, and this thing absolutely melts. This gun’s only downside is it eats through ammo like none other on this list.