Nice spin. "Grenade launchers" are already controlled. He want to get his hands on whatever it is you're keeping in your nightstand to protect against burglars who can't get guns because the freaking Democrats and Rudolph Giuliani passed a law.
Yes, grenade launchers are controlled, though most of the RKBA crowd believes they should not be in any way. But, I don't see Rudy wanting my handguns, or my rifle; at least that's what he says. As for the other candidates on the GOP side, I would guess they all support "reasonable limitations". Also, I would guess the assault weapons ban will be passed and signed long before a President Rudy takes office.