This guy is a moron. Airsoft guns do not have to be registered as firearms and neither do paintball guns, Case law is already settled. Ray Gong already proved in court that they are not firearms. Now if you use one in any UNLAWFUL manner you can be charged.
Here is another statement from this "lawyer" who doesn't know the law...
"When it comes to assault rifles in New Jersey, there is a strict prohibition. Gun magazines aren’t permitted to carry more than 10 rounds, as of a law enacted recently to further limits magazine capacity. Any firearm purchased before May 1, 1990 is not subject to these rules and is “grandfathered” and exempt from regulations."
There is no grandfathering of anything.