37 Tex. Admin. Code § 6.43
If a license holder is carrying a handgun on or about the license holder's person, then upon demand by a magistrate or a peace officer that the license holder display identification, the license holder shall display both the license holder's driver's license or identification certificate issued by the department and the license holder's handgun license. Violation is a Class B misdemeanor under the Act, §6(i).
Source Note:The provisions of this §6.43 adopted to be effective January 8, 1996, 20 TexReg 11128.