You can't legally open carry in New York State. Here's the relevant part of NY Penal Law section 400 (2)
A license for a pistol or revolver, other than an assault weapon or a disguised gun, shall be issued to (a) have and possess in his dwelling by a householder; (b) have and possess in his place of business by a merchant or storekeeper; (c) have and carry concealed while so employed by a messenger employed by a banking institution or express company; (d) have and carry concealed by a justice of the supreme court in the first or second judicial departments, or by a judge of the New York city civil court or the New York city criminal court; (e) have and carry concealed while so employed by a regular employee of an institution of the state, or of any county, city, town or village, under control of a commissioner of correction of the city or any warden, superintendent or head keeper of any state prison, penitentiary, workhouse, county jail or other institution for the detention of persons convicted or accused of crime or held as witnesses in criminal cases, provided that application is made therefor by such commissioner, warden, superintendent or head keeper; (f) have and carry concealed, without regard to employment or place of possession, by any person when proper cause exists for the issuance thereof; and (g) have, possess, collect and carry antique pistols which are defined as follows: (i) any single shot, muzzle loading pistol with a matchlock, flintlock, percussion cap, or similar type of ignition system manufactured in or before l898, which is not designed for using rimfire or conventional centerfire fixed ammunition; and (ii) any replica of any pistol described in clause (i) hereof if such replica--