Under Texas law, it's illegal to bring a handgun onto property with a Texas Penal Code 30.06 sign.

Under Texas Penal Code 30.07, business owners can also ban openly carried handguns (but implicitly allow concealed weapons).

MySecuritySign offers state-compliant No Guns signs for private property owners who wish to prohibit people from carrying concealed and open-carry weapons on their property. Private entities that want a blanket ban on firearms must post both signs.