From CriminalDefenseLawyer.com:
In 2019, a federal court struck down a New York law that made it illegal for civilians for possess stun guns or Tasers anywhere and for any reason. The court left open the possibility that certain restrictions on these weapons could pass constitutional muster. But until the state changes its laws, New Yorkers are free to buy, keep, and use stun guns—as long as they don’t use them to commit other crimes.