Different equation entirely.
Speaking libertarian-to-libertarian for the moment, people ought to have the freedom to own, carry and use guns. Unless, that is, a compelling argument can be made for infringing on that liberty. Plus, the infringement must be the least onerous practicable, and less harmful than the condition it intends to correct.
That's basically the same argument that any good libertarian would apply to any freedom.
We wrangle about guns because we have the 2nd amendment. We don't have amendments protecting the ownership or use of other things (with the partial exception of homes). Even though, for example, you could probably make a better argument for protecting vehicles than for protecting guns. Or, in this day and age, protecting internet access.
So . . . the question resolves to these elements, I think. Can a compelling argument be made for infringing the liberty to own, carry and use guns and, if so, are the remedies proposed practicable and minimally intrusive?
Do you think the number of gun-related deaths provides a sufficiently compelling reason? I do. And I don't believe I have ever heard anyone sensibly argue that all these gun-related deaths is not a compelling argument. Can you make that argument?
But even if you agree that the compelling argument criterion has been met, compelling argument to do what, exactly? That's where it gets tricky, imo.