Firearms and Ammunition - As introduced, requires, subject to certain exemptions, that a sale or transfer of a firearm be done through a federally licensed gun dealer; creates a Class B misdemeanor offense for sales or transfers that are not conducted through a gun dealer; changes the time frame for clerks of court to report certain mental health adjudications from no later than three business days to within 72 hours; changes the time frame for clerks of court to report a final disposition of a criminal proceeding to the Tennessee bureau of investigation from not later than 30 days to within 72 hours. - Amends TCA Title 16; Title 18, Chapter 4; Title 33, Chapter 3; Title 38, Chapter 6; Title 39, Chapter 17, Part 13 and Title 68, Chapter 11.