antique firearm
An antique firearm is a gun (or other device designed to expel projectiles) that was made in 1898 or prior, or a replica of such weapon, or a black powder muzzle-loading weapon, provided that it does not use readily available conventional ammunition. See: United States v. Tribunella, 749 F.2d 104 (1984). Federal law provides two primary definitions for antique firearms.