Is there anything in US law that restricts shipping an antique firearm from the US to an overseas buyer? The gun is a 5mm pinfire made in the mid 1800s. I suppose it would be shootable if anyone could find functioning 5mm pinfire ammo, but generally I view it as a nonshootable antique due to the lack of ammo. I am familiar with the standard response that BATF does not regulate firearms made prior to 1899, but other federal agencies may be involved in regulating exports.