While this is an exciting time, take a deep breath: many laws still apply after the mandate takes place. Don't get caught in a legal battle because you misunderstood the current legal landscape.
Here is a recap of the critical information:
The mandate will stop the restriction on magazines. There are no specific legal definitions separating rifle, pistol, or shotgun magazines—they are simply magazines. Yes, you can have a 30-round magazine in your AR and a 17-round magazine in your Glock, despite the pistol AWB remaining in place.
The only part of NJ's assault weapon ban specifically declared unconstitutional applies to rifles. The named list of banned rifles (such as the M1 Carbine) and NJ's specific rifle "evil features" definitions no longer exist.
Those repealed evil feature restrictions previously applied to semi-automatic rifles accepting detachable magazines with two or more of the following:
*Folding or telescoping stock
*A pistol grip that protrudes conspicuously beneath the action of the weapon
*Bayonet mount
*Flash suppressor, or threaded barrel designed to accommodate a flash suppressor
*Grenade launcher mount
The rifle AWB repeal does NOT repeal the pistol or shotgun AWB, nor does it legalize suppressors or short-barreled rifles (SBRs) in New Jersey. "Pistol" style ARs remain effectively off the table, for the time being. Pistol and shotgun AWB rulings were remanded to NJ courts, which must still officially rule them unconstitutional. This will take time. Additionally, a separate case regarding suppressors and another for SBRs is currently moving through the state court system. This will also take time.
You MAY be able to convert your "Other" into a rifle. Federal regulations strictly require a rifle to have an overall length of at least 26" and a barrel length of at least 16". These are non-negotiable. Note that overall length for a rifle is measured in its longest configuration (e.g., with a folding stock extended). If your muzzle device is permanently pinned and welded (P&W), it counts toward barrel length (e.g., a 14.5" barrel with a muzzle device that adds 1.5" to the total barrel length with a P&W, while also accounting for the ~0.6" of thread overlap).
Do not, under any circumstances, put a stock on your "Other" if the barrel is under 16". That creates an illegal SBR, and NJ will likely make an example out of you.
Beyond that, virtually every other NJ gun law remains in full effect—including laws governing transport, ammunition, carry permits, transfers, and purchasing. Refresh yourself on these rules before taking any action.
Also, as it currently stands, until the mandate goes through, nothing has officially changed. The odds of AWB and mag laws being enforced is very low, but this is just a reality of the situation. Things could change at a moments notice, and you don't want to be in possession of this stuff. You're all adults though, so I don't need to lecture you on this.
Of course, I'm not a lawyer.
If you have anything I should add, let me know.