California’s new gun law could curb the use of ‘ghost guns.’ What are they?

California Gov. Gavin Newsom on Friday signed a bill that will allow people to sue distributors of illegal assault weapons, parts to build them, .50 caliber rifles and guns without serial numbers.

https://www.usatoday.com/story/news/politics/2022/07/22/ghost-guns-california-law/10128633002/