3-D-Printed Guns Will Soon Require a Background Check in California By Kenny Wassus and Cait Munro Last month, California passed a law that will require anyone assembling a 3-D-printed firearm to obtain a serial number from the Department of Justice, a process that also requires submitting to a background check. Read More Tags: original video guns 3d printing gun safety laws select all More Aug. 11, 2016 Watch Now Would You Volunteer to be Infected With COVID-19? How Epidemics Made NYC Better The Story of a Coronavirus Infection 3-D-Printed Guns Will Soon Require a Background Check