In the wake of Luigi Mangione’s alleged killing of a health care CEO with a partially 3D-printed pistol, we built and tested ...

“I was shocked that it was 3D printed, and surprised it was such ... That’s a variant on the Glock FMDA 19.2 model, released by the same open-source collective where he uploads his designs ...

The FMDA 19.2 model, released by a group originally ... gun model to be considered the most practical and reliable 3D-printed Glock design available at the time it was released three years ago.

Also called a "chip" or "auto sear," it's a small device that gets installed on the back of a Glock handgun ... illegally imported from overseas or 3D-printed locally. Because the devices can ...