My characters will seldom have more than 2 weapons if they are combat orientated. They will have their primary weapon that they've been training with, and a side arm of sorts in the event they lose their weapon. What few times they have any more weapons than that, it's usually in the form of grenades, knives, smaller items that are easier to carry. I never really got the appeal of having FPS inventory, but I seem to be in the minority in that regard.