1. I'd say that they come with nothing. Makes sense since all the weapons pretty much are player made.
2. I wonder if grenades and explosives and all that will become utility items rather than weapons? I think they still need to fix them as all those sorts of items seem to require ammo, even though they themselves are teh ammo.
I'd imagine explosives are exempt seeing as they don't need ammo - they are the ammo. They're a single-use item, so I doubt they'd be infinitely reproducible in a trooper's hands.
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"I like Justin Beiber Mash-Up's the best" is what I keep telling myself.