This should have never happened. There's several details regarding the inciting incident that this guy should've considered as out of the question the main one being modifying a rental firearm. On top of that, I would be terrified of bringing any printed fire control part to a public gun range of all places given all the extra risk of people standing beside you. Then considering he has no way of testing his print before hand and just assuming it's functional enough to use in a gun he probably knew absolutely nothing about beforehand that kinda irresponsibility is why I shudder Everytime I see or hear something about guncad from mainstream sources. It's almost always something negative. It wouldn't surprise me if the initial incident was on social media somewhere. You know damn well his whole plan is was to film it for clout.