If one orders a "assault weapon" from their ffl, and their ffl modifies the weapon so it complies with the NY regulations the weapon is in compliance and thus legal to own . I've spoken to the NYSP firearms division and confirmed that a weapon can be converted. The only catch is that one can not take possession of any weapon until it is in compliance with the NY law ( PL265.00 ), and if the weapon is banned by name such as a "Colt AR15" and manufactured after 09/13/94 it would be unlawful to possess it if you are a non-leo. For example, one ( a non-leo ) could have their ffl order a new Arsenal SA M7, and before taking possession of it, have their ffl cut off the lug, and remove the barrel threads or even perm. attach a muzzle brake, and one would have a NY legal post ban weapon. On the other hand, one could NOT order a Colt Tactical carbine ( model 6721 ) and convert it, because it is marked AR-15 A3 and thus banned by name.
1981.