A 3D-printed gun and silencer found on suspected UnitedHealthcare CEO killer Luigi Mangione highlights the growing trend of homemade firearms in the US, with their use doubling in recent years.

3D-printed guns: Federal judge in Seattle frustrated over case, could make decision by Monday Originally published August 21, 2018 at 2:06 pm Updated August 21, 2018 at 4:31 pm ...