All you need to do on the M1 Carbines is get an aftermarket 10rd magazine (there is no original 10rd surplus mags, they do not exist), go to Ebay and buy the barrel band without the bayonet lug and swap out the one with the bayonet lug. You need to remove the front sight in order to remove the barrel band. If you are buying one from a dealer, just ask them to remove the barrel band and buy the one on Ebay. They are not that expensive. Now you have a NY compliant rifle.
I would not alter a historical rifle to appease herr monkeyface. Jmo.