NMC – Does attacking Childers in Mississippi for being pro-gun-rights make any kind of sense?

Here’s a weird one from a few days ago in the Hill. If I’m reading this correctly, a DC group is going to do anti-Travis Childers ads in Mississippi the basis of which is this: That by pushing through a pro-gun-ownership-in-DC bill through Congress, Childers is undercutting the voting rights of folks in DC.

Without regard to how one feels about the DC gun owner statute the Supreme Court struck down, who is thinking exactly what in deciding to run this ad?