Pre-ban AR-15's off any brand are still legal in NY as long as they are registered in the next year and meet the criteria of NY's old AWB.
Now are we talking Pre-ban as in 1994 or pre-ban prior to the new SAFE act? I currently live in Ohio and have been NYizing my Bushmaster AR-15 for when I retire and return back home to NY. My bayonet lug has been removed, the flash suppressor has been replaced with a pin and welded compensator and the adjustable stock replaced with an A2 stock. Now is this still NY legal?