Police investigating the shooting of UnitedHealthcare CEO Brian Thompson on Dec. 4, 2024, have announced that the suspected ...

And 3D printers are much, much cheaper. That's perhaps the biggest thing of all. The 3D printer that I used back in 2015 to make the body of an AR-15 cost almost $3,000 alone.

3D printing has opened up whole new avenues of creativity, for anything from simple tools to complex devices, but are there limits on what you should print?

The fact that even a relatively old model of 3D-printed firearm allegedly allowed Mangione to shoot Thompson repeatedly on a Manhattan street—certainly the most high-profile shooting ever ...

3D printing has opened up whole new avenues of creativity, for anything from simple tools to complex devices, but are there limits on what you should print?