Criminal Offenses - As introduced, prohibits a juvenile adjudicated delinquent for conduct that, if committed by an adult, would constitute the offense of threatening to commit an act of mass violence from purchasing or possessing a firearm until the juvenile reaches 25; prohibits a person appropriately licensed by the federal government from selling a firearm to a person who is ineligible to possess a firearm pursuant to any court order or under any law of this state; increases penalties for sexual exploitation of a minor offenses. - Amends TCA Title 37 and Title 39.