Gun law in the United States is defined by a number of state and federal statutes.  Sale or delivery of firearms is restricted in Texas like any other U.S. state.  In almost all the states of the U.S., an importer, manufacturer, dealer or collector shall be licensed under the Federal Gun Control Act of 1968, to be a lawful seller.

Selling or renting a handgun to any person with the knowledge that such person may use it wrongfully is unlawful.  Selling, renting, giving, or offering to sell, rent or give a firearm to anyone under the age of eighteen without the parent or guardian’s written consent is also unlawful.  It is unlawful to knowingly or recklessly sell any firearm or ammunition to an intoxicated person.  Sale of handgun ammunition that is designed for the purpose of penetrating metal or body armor and to be used principally in pistols and revolvers is unlawful.

The Texas laws prohibits sale of a zip gun which is used to expel a projectile using an explosion or burning substance.  Law also prohibits the sale of machine guns, explosive weapons, short-barreled firearms, or silencers.

A municipality, county or other subdivision of the state of Texas may not bring suit against a firearms or ammunition seller for recovery of damages resulting from, or injunctive relief or abatement of a nuisance relating to, the lawful design, manufacture, marketing, or sale of firearms or ammunition to the public.

Rules may be adopted by a government department for the sale of a retired firearm to an officer of the department.  According to Tex. Alco. Bev. Code § 5.141, the Alcoholic Beverage Commission may adopt rules for the sale of a retired firearm to an inspector or representative of the commission.