Gun violence prevention group takes on 3D printed guns

"They’re easy to make and almost impossible to stop," according to the PSA.

The new campaign from Stop Handgun Violence says:

"More than 100,000 Americans have downloaded plans to print 3D weapons. That’s why it’s so important to ban the downloading and use of these dangerous digital plans."

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According to their web site: "Stop Handgun works to prevent firearm violence through public awareness, education, policy advocacy and law enforcement strategies."