The campaign is asking people to sign an online petition to pressure the state to pass laws allowing for the open possession of firearms.

The ad, which began running Tuesday, is paid for by opencarry.org, the same group that paid for a billboard on Interstate 35, just north of San Antonio, with the same message.

You might think gun owners would say that is a great thing, but those who know guns the best say, "Not so fast."

Gun storeowner and concealed handgun instructor Jerry McCall is opposed to open carry.

"There is that gun sticking out for the whole world to grab, and all it takes is one idiot," McCall said.