weapon used in Saugus CA school shooting was an unregulated “ghost gun”

A troubling element of the murder-suicide in Saugus is that the firearm used was a “homemade” or rather home-assembled gun, put together with a parts kit. This subset of the firearms industry has little regulation for such “kit guns”. Unlike home manufacture using 3-d printers, the individual components are available from a variety of subcontracted sources and collected…