updated May 29, 2023
Yes, it’s legal to carry concealed weapons in all Nevada casinos.
In fact, you may carry concealed anywhere in Nevada, except: public (meaning government) buildings (with posted prohibition signs and metal detectors); buildings at airports; and schools, including colleges and day-care facilities.
You can even drink alcohol while carrying: the blood-alcohol-content limit for carrying concealed in Nevada is 0.10 (compared to .08 for DUI). Violation is a misdemeanor.
Signs posted on the doors of private businesses are not backed by the force of law. This means it’s not illegal to carry a concealed weapon into an establishment with a sign that prohibits it. It’s only requested, or strongly discouraged.
That said, if someone in authority in a place of business asks you to leave for any reason, which includes no reason, under the trespass law, you must get out. And this is the key point. If casino personnel discover that you’re carrying a gun, they have the right to ask you to vacate the premises and we assume that most casinos will. If you’re asked to leave, you should do so to avoid being trespassed, which could escalate the situation to the point where Metro is called in.
Another concern might be if you attend an event, such as a concert, in a casino venue in which you'll pass through a metal detector on your way in. To enter a nightclub, as another example, you often run a gauntlet of beefy bouncers with metal-detecting wands or, in some cases, who pat you down. Since the security involved is specifically geared to preventing weapons from making it inside, in these cases, discretion is the better part of valor (in other words, either leave the gun at home or in the car, or don't try to go in).
Of course, the whole idea of concealed carry is that no one but you knows you’re armed, so even if you enter an establishment with signs prohibiting firearms, in the absence of metal detectors, there wouldn’t, or at least shouldn’t, be any way they’d know you’re packing.
However, Nevada is also an open-carry state, which means it's legal to carry non-concealed, again, everywhere except public buildings and schools. This is a different matter altogether, which we cover in the next FAQ.
Sprouts and Buffalo Wild Wings are two of the few commercial establishments that disallow concealed handguns on their property.