https://blogs.findlaw.com/fourth_circuit/2013/10/antique-firearms-black-powder-ammo-in-felon-in-possession-case.html
Doesn't this mean antique pistols and other such non-"firearm" firearms are exempted in a number of statutory-defined situations based on the word "firearm?" Airports? Bars? Airport bars? Banks?
See: https://www.atf.gov/firearms/firearms-guides-importation-ver...