Final answer:
Ballistic analysis and forensic examination are the two main tools used by firearms experts. Ballistic analysis involves studying the characteristics of the bullet and firearm, while forensic examination involves analyzing evidence left at the crime scene.
Step-by-step explanation:
The two main tools used by firearms experts are ballistic analysis and forensic examination. Ballistic analysis involves studying the characteristics of the bullet and the firearm to determine its origin, such as the type of firearm used and the distance from which the shot was fired. Forensic examination involves analyzing the evidence left behind at a crime scene, such as bullet casings, gunshot residue, and bullet trajectories, to gather information about the shooting incident.