It really depends on alot. Are you legal is the first question. Then is there anything special about that gun that would make it illegal. I am not familiar with that firearm so I can't say for certain. NY is not open carry, and does not recognize other states CCW's. If your LEO then it would be legal if its legal for your dept. Check NYS Penal law section 265 regarding firearms.
Thanks for trying to help. I'm a VA resident and we do not have any form of gun registration except on fully automatic machine guns which have to be registered with the state police. Everything else, pistols, rifles, shotguns, do not have to be registered in any fashion.
The Firearm in question is a Rifle not a pistol. The gunis a bullpup design that folds up like a survival rifle. The Kel-Tecs use a variety of popular pistol magazines including Sig, Glock, Beretta, and Smith and are chambered in either 9mm or 40.