Laws always changing here. I had to grab a WW11 rifle before Brown signed into laws all guns had to be registered as before it was older than 50 years didn’t have to so thought came to mind confinscation. Not semi though only 5 shot 30 OT. WW11 has some tough times but sure took care of their guns.
http://www.thefederalistpapers.org/us/new-san-bernardino-shooting-gun-detail-could-be-a-game-changer