Seems quite simple to me. Things like guns, swords, daggers and the like are designed to be weapons. So they’re generally going to be assumed to be a weapon any time they’re used/brandished.
But literally anything can be used as a weapon. So, in normal use they’re not a weapon but if used as a weapon, they become one in that instance.
Yeah, I’d agree there. It should be whatever the US equivalent of aggravated assault is. But the charges you could levy bearing in mind he aimed for the head could go as far as attempted murder I guess.