You say “no credible way”, but there is a rhetorically airtight way. That is “no guns = no gun rampages + no gun crimes + no gun anything”. No more worry about guns. We’re talking Garden of Eden here. So never mind “credible”.
unless i am mising something, i would disagree that it’s not rhetorically airtight under your explanation.
if your equation was true, that would also mean no guns for anyone, including police, alphabet soup folks, and the military and secret service. and that will not happen. unless you’re assuming the blatant hypocrisy won’t be picked up on by anyone. which it already has.