Firearms and Ammunition - As enacted, expands the definition of "machine gun" to include any part, or combination of parts, designed and intended solely for use in converting a firearm into a machine gun; increases the classification for the intentional or knowing possession, manufacture, transport, repair, or sale of a machine gun from a Class E to a Class C felony; reclassifies certain other offenses involving the possession of firearm or handgun ammunition; makes a defendant ineligible for parole if convicted of aggravated assault that involved the use of a firearm from within a motor vehicle. - Amends TCA Title 39 and Title 40.