So the media got one right.
https://abcnews.go.com/US/550-guns-seized-home-felon-southern-california/story?id=55994959
http://www.newsweek.com/la-police-seize-arsenal-more-500-weapons-felons-home-983512
That is enough weapons to nearly equip a battalion. About the size of small Revolutionary era Armory. I do see a ton of AR uppers and not many lowers so I think the count is suspect but it is still a respectable amount of guns.
https://abcnews.go.com/US/550-guns-seized-home-felon-southern-california/story?id=55994959
http://www.newsweek.com/la-police-seize-arsenal-more-500-weapons-felons-home-983512
Police in Los Angeles have seized more than 550 firearms from two homes following a tip-off that a convicted felon was storing an arsenal.
A total of 553 weapons were recovered and one suspect arrested following the joint operation by the Los Angeles County Sheriff’s Department and the California Department of Justice.
That is enough weapons to nearly equip a battalion. About the size of small Revolutionary era Armory. I do see a ton of AR uppers and not many lowers so I think the count is suspect but it is still a respectable amount of guns.