New York Consolidated Laws, General Business Law - GBS § 896. Operation of a gun show

(a) at all times during such show conspicuously post and maintain signs stating “A National Instant Criminal Background Check must be completed prior to all firearm sales or transfers, including sales or transfers of rifles or shotguns”.  Signs must be posted at all entrances to the gun show, at all places where admission tickets to the gun show are sold and not less than four additional locations within the grounds of the gun show;

(b) notify all firearm exhibitors in writing that a national instant criminal background check must be completed prior to all firearm sales or transfers, including sales or transfers of rifles or shotguns;  and

(c) coordinate with the division of state police to provide access at the gun show to perform a national instant criminal background check prior to any firearm sale or transfer.  Any firearm dealer licensed under federal law who submits a request to the division of state police to perform a national instant criminal background check pursuant to this paragraph shall provide the seller or transferor of the firearm, rifle or shotgun with a copy of the United States Department of Treasury, Bureau of Alcohol, Tobacco and Firearms Form ATF F 4473 and such dealer shall maintain such form and make such form available for inspection by law enforcement agencies for a period of ten years thereafter.