New Jersey law prohibits the possession “without any explainable lawful purpose” of any “gravity knife, switchblade knife, dagger, dirk, stiletto, dangerous knife or ballistic knife.” Possession of a weapon in one’s home is arguably a “lawful purpose.” Pocket knives may be carried outside the home, except by one having unlawful intent or who possesses the knife for some unlawful purpose. Self-defense beyond the limits of one’s home is not a lawful purpose.