In the past, local gunsmiths had the ability to manufacture customized firearms according to a customers specifications as well as work on existing pieces. Nowadays, firearm manufacturers produce these custom pieces. Modern gunsmiths continue to be experts in restoring, customizing, modifying, and repairing handguns, rifles, shotguns, rifles, and muzzleloaders. Each gunsmith is licensed, regulated, and regularly inspected by the Bureau of Alcohol, Tobacco, and Firearms. They are responsible for keeping detailed records including all gun repairs, serial numbers, firearm descriptions, and owner information. The busiest time of the year for this profession is prior to and during hunting seasons. Professionals in this field can be found working in gun manufacturing facilities, sporting goods stores, gun shops, and their own shops. In addition to a passion and knowledge of historical and modern firearms, a gunsmith has completed courses at a trade school, technical school, or community college. There are even courses available online thanks to the internet and through the National Rifle Association. The military also provides training pertaining to firearms to those enlisted. Being an apprentice for an experienced gunsmith is also a valuable aid to learn facts not taught in classrooms or books.