Here in Florida they have a few laws against toys of this type. I built a Spud Gun and on the first test firing I was confronted by a police office that was well informed on the use of such home made guns. No ticket but was advised I would get a ticket if I was caught using it and gun would be confiscated.
Owning or using spud guns in Florida is illegal pursuant to Florida Statute 790.161 Making, possessing, throwing, projecting, placing, or discharging any destructive device or attempt so to do is a felony.
US Army 1953-1977
We, the People are the rightful masters of both Congress and the courts not to overthrow the Constitution, but to overthrow men who pervert the Constitution.