No matter what you would be charged with weapon psoosseion in the fourth degree. Depending on the what, how and why there maybe other charges. Judges don't like illegal weapons even if used in self defense....stick to mace in NY. If you are thinking along the lines of self defense. look at another section of the Penal Law...sec 35 which is justification. It will give you guidlines when you can use any force against another up to and including deadly force, good to read before not after a incident