I don't see why not, YOU can carry a firearm so I don't see what the problem would be. As long as he isn't carrying it you should be fine AFAIK. There isn't anything in the law that says a felon must say xxxx in distance away from a firearm. It says something like they can't buy and carry one. It's not like someone who was charged with a sex crime that they can't go on school grounds or what have you.