Today the toaster, tomorrow the world

H/T Everyday, no days off
And, since I can’t just leave off with a simple link…
As far as I can tell, federally, this isn’t a firearm. I don’t happen to have the federal definition of a Firearm on tap – though I need to get it at some point for an article in the queue. It can probably be found here
In NJ, it’s probably not a firearm. Firearms being defined in NJ law as such: "Firearm" means any handgun, rifle, shotgun, machine gun, automatic or semi-automatic rifle, or any gun, device or instrument in the nature of a weapon from which may be fired or ejected any solid projectable ball, slug, pellet, missile or bullet, or any gas, vapor or other noxious thing, by means of a cartridge or shell or by the action of an explosive or the igniting of flammable or explosive substances.  It shall also include, without limitation, any firearm which is in the nature of an air gun, spring gun or pistol or other weapon of a similar nature in which the propelling force is a spring, elastic band, carbon dioxide, compressed or other gas or vapor, air or compressed air, or is ignited by compressed air, and ejecting a bullet or missile smaller than three-eighths of an inch in diameter, with sufficient force to injure a person.” Incidentally, if the “projectile” in this video is over 3/8” (approximately .38 caliber), it would appear to skate out on the projectile size clause. Anyone know the history of that clause? Because I’m pretty sure you could make a useful airgun that threw a projectile of that size. Paintball?
Disclaimer – I am not a lawyer, and am entirely unaware of case law surrounding this topic. Consult a lawyer before undertaking any legally risky activities.