(FOX 26) - The biggest weapons seizure ever made in a single home happened by the California Department of Justice. More than 500 firearms and 100,000 rounds of ammunition. Because of mental health issues, a man in California is not allowed to own a gun. Agents seized more than 500 weapons from his home in Clovis, California. The haul includes about 300 handguns and almost 100 shotguns. The owner was a federal arms dealer. His license was revoked last year.