Asked where he got the idea, he told the local media outlet he saw people on Twitter talking about using 3D printers to make big bucks by printing guns for buyback programs. 

Perhaps he was referring to the story of a man who recently turned in 62 3D-printed guns to Houston’s buyback program and collected $3,100. 

Some police departments have changed policies on accepting 3D-printed firearms as more and more people take advantage of flawed buybacks. 

Keith Taylor, an adjunct professor at John Jay College of Criminal Justice, which is part of the City University of New York system, recently told Pew Research that buybacks are mostly ineffective at reducing homicides:

"It’s a waste of resources if the entities that are sponsoring believe that it’s going to have a positive effect on reducing crime."

Kem concluded to the media outlet: "Gun buybacks are a fantastic way of showing, number one, that your policies don’t work, and, number 2, you’re creating perverse demand. You’re causing people to show up to these events, and, they don’t actually reduce crime whatsoever."