I live in Kansas. For a "No Gun" sign here to have any legal weight, it must be a particular sign. In Missouri the signs have no consequence, unless you are asked to leave. Then you must leave. I am not sure what signs mean, or if a specific sign is required in Oklahoma. I looked at handgunlaw.us but saw nothing about signs in Oklahoma. The sign I encountered there said "No Weapons" and was next to the "No Smoking" sign. Did the sign have any legal weight? Thanks for any replies.