• Firearms and tool mark evidence are important classes of physical evidence. • Important patterns for individualization include those left behind on fired evidence,

in tool marks, and in writing. • Rifling was added to the barrels of firearms to impart spin to the bullets, which

Don't use plagiarized sources. Get Your Custom Essay on
Just from $13/Page
Order Essay

increased accuracy and range. Additionally, this process impressed into the barrels of firearms individualizing characteristics that help connect a bullet and/or car- tridge casing to a particular firearm.

• Bullets can be identified to a particular weapon using a comparison microscope to examine the individual characteristics.

• Gunshot residue can be identified on the hands of a person, but this finding does not show that the person fired a weapon.