I have been to a ton of gun shows, bought plenty, never sold a single thing.

We have a gun show this weekend that I would like to sell an AR at. I always see plenty of (non-vendor) people carry guns into the show to either sell or trade. Is it kosher to do that with, say, one rifle? I am referring to social norms, not legality.

I completely understand the vendors have to rent tables, cover expenses, etc and I really don't plan to push it. One PSA carbine is all I am trying to move.

Assuming selling a single gun is not a problem, do I just walk around with a slung rifle until someone asks if I want to sell or trade? Maybe hang a cardboard sign on it with a price?

Thanks

Andy