Security at the banquet hall off Rifle Camp Road seized the boy, the handgun and a magazine loaded with hollow-point bullets, Woodland Park Police Capt. Michael Brady said.
They turned all over to responding officers, he said.
Woodland Park police signed a delinquency complaint charging the teen with weapons-related offenses, the captain said.
They then sent him to the Essex Juvenile Detention Center in Newark pending a closed-door hearing, because of his age, in the Family Part of Superior Court in Paterson.
Click here to follow Daily Voice Paterson and receive free news updates.