Firearms and Ammunition - As enacted, prohibits the purchase or possession of a firearm by a person under 25 if the person was previously adjudicated delinquent for an act that, if committed by an adult, would have constituted certain offenses; allows the TBI access to juvenile court records for the limited purpose of performing a background check prior to the transfer of a firearm or to determine eligibility for a handgun carry permit pursuant to existing law. - Amends TCA Title 18; Title 37 and Title 39.

This bill prohibits individuals under 25 from purchasing or possessing firearms if they were previously adjudicated delinquent for serious offenses such as aggravated assault, animal cruelty, or threats of mass violence. It requires juvenile courts to inform young defendants of this permanent restriction before accepting a guilty plea and mandates that the Tennessee Bureau of Investigation access juvenile records to enforce the ban during background checks. The law also makes it a misdemeanor for anyone under 25 with such a history to possess a firearm and bars licensed sellers from selling guns to these individuals.