If you are in one of the 5 boroughs of NYC, you can't own an AR-15. NYC has it's own laws separate from the rest of the state.
The definition of assault weapon includes semiautomatic center fire or rimfire rifle or semiautomatic shotgun, which has one or more of the following features:
• folding or telescoping stock or no stock;
• pistol grip that protrudes conspicuously beneath the action of the weapon;
• bayonet mount;
• flash suppressor or threaded barrel designed to accommodate a flash suppressor;
• barrel shroud;
• grenade launcher.
Source:
NRA-ILA gun laws.
So that post-ban AR you showed, while legal in NY
State is not legal in NY City.