You cannot pull up the statute on carrying in a casino because there are no statues. Casinos are private property and regulate their own rules as to allowing or not allowing firearms on property. As a rule, most do not allow firearms on property they may or may not post it at the entrance. If one enters past a no firearms allowed sign posted on private property (casino) with a firearm no law has been broken, just the property rules. Their recourse is to ask you to leave or lock the firearm up. If for whatever reason a person decided not to leave or comply with the rules when asked, the property can get the law involved on a trespass. With that said, most casinos have a well-trained security force. Depending on the actions of the person that has been asked to leave it could get very unpleasant. There have been some postings on open carry dot org of person open carrying in some of the casinos in Las Vegas without being ran out.