Abstract: The invention of serially, pin-numbering, or.coding of bullets, bullet casings, and other projectiles on their bodies, with information such as the name of ammo maker; country of origin; type of gun; and abbreviation of the Government Agency, whose responsibility would be to register firearms, issue licenses, and maintain a database track records of firearms and ammunition sold by the ammo shops in the country, is a new art in the use of firearms and ammunition and management to trace firearms crime offenders. The invention makes ammunition the prime tracing point for any firearms crime related offence, rather than guns which have been the traditional core tracing point for firearms crime investigations. Since the bullet does the killing or wounding when a firearm is fired at someone, by introducing my invention, it would become easier, quicker, and accurate to trace and arrest actual firearms crime offenders, by the.