Leave them with friends not a gunshop. From what I unnerstan "Da rulez" now say that you have to pass a NICS check to get them back and any delay will require that you wait until the delay clears. You may wind up going home without your weapon(s).
A better idea - go to the local branch of your bank and rent a safe deposit box. I think it's like $10/month in most places and no NICS check to get them back.
Well, there was a bump, a thump, a cloud of dust, and the smell of turnips wafting through the air. Wait! There was this produce delivery truck too...