Impossible—isn’t New York a gun free zone?
I think some folks can actually conceal carry in NYC. They have to disassemble their ammo and have the casings and slugs and powder and primers carried by 4 other folks who remain at least 200' away from each other and from the person carrying. The person with the weapon has to have a trigger lock installed and then has to keep the weapon in a portable safe (takes retina scan/fingerprint scan/3 separate combos to open) which is rated at 6,000 Celsius for 16 hours, which makes it rather bulky and needs a small panel truck to haul it around.
Don't even get me started on the sequencing rules and requirements for actually being authorized to start to assemble it into an operational weapon - we'll be here for the next 16 hours - about how long it takes before it can go BANG!