Firearms identification is too often referred to as ballistics. Accurate definition can be defined as identifying fired bullets, shell casings, or other ammunition components as fired from a specific weapon. Since the weapon is made of hard metal like a tool, it creates marks on the components of the cartridge making it more similar to Toolmark identification. There are various pieces of evidence, in addition to the firearm itself, that the laboratory will use to assist in the investigation to identify a firearm, including shell casing wadding, fired cartridges and shell casings, and much more. Other identification processes that examiners will use are tracing the firearm to the manufacturer who will produce a caliber and available ammunition components, calculating the distance of the shot by lifting debris from clothing tests, and properly unloading the firearm from fire. has shown, there is no evidence to show that two firearms will create the same marks on spent ammunition cases. Markings on firearms are as unique as a human fingerprint and cannot be reproduced by a different firearm. Research conducted by Jeffery S. Doyle showed that approximately 80% produced what he calls a "mechanical fingerprint" on the ammunition projected from the firearm. No matter how much time passes, it is still possible to make an accurate identification from the cartridge case because the weapon typically does not alter, allowing numerous quantities of rounds fired it will still be able to create the same marks on the last shot as on the shot. first thing. An initial investigation for a firearms case will begin by uncovering class characteristics, which are the intentional or design features that wo... middle of paper... find evidence collected at the scene, looking for the only similar markings streaked and imprinted. Examiners will also initially identify the class characteristics of the ammunition to understand what caliber and pattern the firearm disperses. This will then lead to the examination of bullet and cartridge evidence by firing into a special water tank and cross-examination of the new standards with crime scene standards. These standards are displayed side by side under a powerful macroscope to compare unique signs and create a match. Gunpowder and primer residue can be tested from the suspected hand to determine if a firearm has recently been used. Firearm identification can be a very complex scientific process that can hold the key to solving a serious crime for law enforcement. Works Cited www.firearmsid.comwww.firearmsid.com/A_BulletID.htm