There is a box thing on Mega mans back in Legends 2. I figured it was the generator. BothandSpoilershow it, though it is kinda hard to see.Spoiler
Also, I forgot that there are other weapons than busters.These guys have machine guns. So... I guess regular solid projectile weapons still exist, but buster technology is begining to phase it out. Actualy, as best I can remember, there were only machine guns and missiles. Oh wait, maybe cannons and bombs. But it's not exactly the same thing.Spoiler
The Mega Buster could opperate on its own refractor. I know the Buster Pistol does.
EDIT- Well, I don't think those pictures work. Just hop over to Mega Man Legends Station and look over the Legends 2 Official Artwork Gallery. Thats where I pulled them from.