What is required for a firearm to be classified as ‘curio and relic’?

A firearm is classified as a 'curio and relic' if it is over 50 years old. This classification is important because it allows certain exemptions from regulations that apply to more modern firearms. The Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) defines curios and relics as firearms that have historical significance, are of interest to collectors, or are generally obsolete. The age criterion of over 50 years serves as a standard for distinguishing these firearms, emphasizing their historical and collectible value.

Regarding other characteristics, while being in working condition may contribute to a firearm's appeal as a collectible, it is not a requirement for it to be classified as a curio and relic. Additionally, not all firearms classified as curios and relics are military issue or have been used in war; many civilian-owned firearms also qualify for this classification solely based on their age. Thus, the requirement of being over 50 years old is the key factor that determines the classification.