It would never go to the courts. The DA would dismiss the charges once you showed you legally obtained it from an FFL.The Shockwave is a little different because it’s clearly not a shotgun or rifle due to having no stock and it isn’t a pistol due to not being rifled. You actually have NY law to back you up.
The AR Other however resembles an an AW Pistol in NY law. You can actually be charged for it. If I had an AR pistol with an 11.5 inch barrel in my trunk and you had this OTHER also in my trunk, it would be the same exact gun. An officer would not be able to differentiate the two.
You would have to dance the dance in the courtroom after we both got arrested. With the Shockwave however, you can quote actual laws to a jury showing why it isn’t a shotgun.