I think all of my neighbors have guns because. All legal.
A carry permit isn’t required. But you can get one for out of state reciprocity. Takes a little time, but no referrals.
We don’t have a “Diamond District”. We do have a couple of not too terrible jewelry stores. I recommend against robbing them They deal in gems and precious metals. Gold and silver, of course, but I think they have some brass and lead available as well.
I know the diamond district of course.
Not easy to rob.
A little easier if the seller is stupid and naive