NYC licensed pyrotechnicians are not licensed to work outside the city. Your supplier will have information on personnel available for hire. It is now when you will need to acquire all the required insurance coverage that each township and the gun prop supplier needs in order for your production to even be considered. Contact the town attorney's office for their requirements. Several Long Island Township's issue Film Permits and these need to be procured also.
Next step is for the production company to notify the township's Fire Marshal.
The law enforcement agency will then issue approval which must be received before the gun props can be leased. The agency will be notified that the contracts have been fulfilled once all props have been returned upon completion of the production. The reason for such a thorough administrative process is that before such props can be used, each one must be approved by the law enforcement agency as being in a condition that it can not chamber or fire live ammunition. This is for your safety and that of your actors and crew, as well as the citizens of Long Island. 30 full auto Uzi's capable of shooting 4 foot flames from the muzzle will cost you considerably more then non-function Uzi props made from rubber.