Apparently no one clued this guy off that it’s bullet resistant armor, as he apparently decided the best way to make sure it worked was to shoot himself in the abdomen with a 10mm Glock. I consider this to be about as smart as testing the airbags in your car by driving it into a concrete wall at 40MPH.
It’s interesting, but in the early days of kevlar body armor, the inventor convinced police the stuff worked by shooting himself with it using a .38 service revolver, which was the standard sidearm of most police at the time. I get it’s smart marketing, even if it’s stupid gun safety, but at least that guy chose a relatively modest round that was unlikely to push the armor to its limit. That pales in comparison to testing soft body armor with a round as powerful as a 10mm, though. I think I recall the shooter saying that it was a level II vest. If that’s the case, 10mm is definitely on the upper end of what that vest would have a prayer to stop. I’d say this guy is lucky.