Firearms and Ammunition - As introduced, creates a criminal offense of storing or keeping a firearm in any place if the firearm is not secured in a locked container or equipped with a tamper-resistant mechanical lock or other safety device that is properly engaged so as to render the firearm inoperable by any person other than the owner or another lawfully authorized user; punishes a violation of the offense as a Class A misdemeanor. - Amends TCA Title 39, Chapter 17, Part 13.