From the article:
"While making a ghost gun is legal, selling one is not. Federal officials are sounding the alarm about an increasing black market for homemade military-style semi-automatic rifles and handguns.
Mills where such weapons are built are popping up across the country and especially in California, which has strict gun laws. By 2019, people who own or create homemade firearms in California will have to apply for a serial number from the state and permanently affix it to the weapon."
https://www.yahoo.com/finance/news/california-shooting-rampage-highlights-ghost-guns-185746544.html
"While making a ghost gun is legal, selling one is not. Federal officials are sounding the alarm about an increasing black market for homemade military-style semi-automatic rifles and handguns.
Mills where such weapons are built are popping up across the country and especially in California, which has strict gun laws. By 2019, people who own or create homemade firearms in California will have to apply for a serial number from the state and permanently affix it to the weapon."
https://www.yahoo.com/finance/news/california-shooting-rampage-highlights-ghost-guns-185746544.html
California rampage puts spotlight on homemade 'ghost guns'
Michael Balsamo, Associated Press,Associated Press 6 hours ago
LOS ANGELES (AP) -- The gunman who killed his wife and four others in a rampage in Northern California this week found an easy way around a court order prohibiting him from having guns: He built his own at home.
Kevin Neal, 44, was armed with what authorities believe were two high-powered rifles that he made himself when he opened fire Tuesday on homes, cars and an elementary school around his tiny hometown of Rancho Tehama Reserve. A deputy finally shot and killed him.
In Neal's case, he had been ordered to give up all his guns earlier this year under a restraining order issued against him after he was charged with assaulting two women who lived nearby. He signed a document in February saying he surrendered a 9 mm handgun to a gun store, which also attested to that. When Neal was arrested, police seized an AR-15 Bushmaster semi-automatic rifle.