Gotta enforce that Military Manner, else what does the Army have but guns, rifles, and an occasional grenade?
I'm still a little hazy on that issue myself. I'd think that an Assault rifle would be just any other automatic rifle, as you say Mr. Sherman, the B.A.R. Furthermore, I would say that a S.A.W. would be something you'd want to mount on a vehicle, like an M60 or the Belgian M72 I think it was.