Just one thing to remember about Wikipedia.... the information is posted by the users who may, or may not, have the correct information included... usually safe to use for general information....
BUT, for something like this, I'd check with some official government sites including state and local officials.....
If someone was to travel across a state-line to buy a switch-blade, that could be construed as interstate commerce even if you did not advertise or ship it..... depends on who's reading the laws that day.....
(Just because I'm paranoid doesn't mean people aren't out to get me....)
