Police on Long Island said they have made a big gun bust, right near a school.

Cops seized more than 300 guns and piles of ammo from a house near Centereach High School. Officials say the owner, Jay Steiner, was running an illegal gun business.

Investigators said that Steiner had a federal gun license permitting him to buy and sell weapons, but it expired back in 2004.

Steiner is free on bail and is due back in court next month.