They
are illegal in NYC, especially for someone under 18, along with stun guns, carrying knives of any kind in a public area, regular handguns, fireworks, gas/electric scooters, spray paint (for minors anyhow), flashlights brighter than a certain candlepower (not anything easily portable though), and just about anything else that's any fun. The <5mW keychain lasers may also be made illegal in the future as well. The one thing I'd like to see them eliminate (SUVs) isn't even being considered as far as I know.
I'm all for a proposition this November to eliminate that City Council so they can't ban anything else. Funny how the bad element always somehow obtains the things they make illegal anyway. Next time I hear someone say there ought to be a law against it they'll feel me foot going up their rear and out their mouth.
IIRC, 100 years ago you had kids younger than ten with hunting rifles and they all didn't kill each other.
As to your question, assuming you can find someplace willing to ship it here via UPS, and it's packaged in a nonthreatening form, you should be OK. However, since you run the risk of having it confiscated everytime you use it I don't much see the point of buying it to begin with.
If it's that important to you then write your City Councilperson to have this law and some of the other inane laws overturned. Don't hold your breath, though. I've been trying to get 191-76 (which prohibits cycling on sidewalks) overturned for over 5 years. Oh, and next time there's a proposition on the ballot to increase the number of patrol cars vote yes.
(line shamelessly borrowed from
Falling Down).