The nearly 260 guns and half-million rounds of ammunition discovered in a bunker on a South Jersey man's property this week sounds like an ominous find for law enforcement. But Brian Hinkle's weapons could have been bought and owned legally, said Evan Nappen, an Eatontown, N.J., lawyer whose practice focuses on firearms law. "It depends on the type of weapons involved, if none of them are prohibited assault weapons," he said. "There's no limit to the rifles and shotguns one can possess." "You could have a million guns," Nappen said. "The number is not relevant." As for the ammunition in...