Ballistics experts perform gun testing and bullet analysis to aid in the investigation of criminal cases, and the ballistics expert witnesses on this page are available to provide consultation and litigation support on cases concerning ballistics. The consultants found here may specialize in firearms, firearms design, ammunition, rifles, pistols, handguns, shotguns, and more. They may advise on gun laws, gun accidents, shooting ranges, hunting, gun laws, and the Bureau of Alcohol, Tobacco, Firearms, and Explosives. A ballistics expert witness may supply reports and provide testimony on cases that require shooting reconstruction, shooting scene reenactments, bullet analysis, gunshot residue, and fingerprints, among others.