I see threads like this from time to time and it's always amazing....what I'll call fanboys.....can't take a man at his word. I'm not calling any Members here a liar especially when I wasn't there.
The problem is that the OP is two lines of text which barely demonstrate proficiency with the English language and provide near zero detail on the incident in question, and that the poster has not come back to answer any of the (IMO legitimate) questions that have been raised. As BlitzPig said, it *feels* very much like a trolling and/or astroturfing attempt. I'm not claiming that that's what happened, but the tone and the "drive-by" nature of it make it feel that way.
OK, everyone with a P99c, load er up....put your shootin' hand on top of the muzzle and let's go out and bang the pistol up and down to make sure all those safeties work 100% of the time.....every time. I'll wait for your reports. I personally don't count on any safety to be 100% reliable. Firearms are dangerous and need to be handled with respect at all times regardless of number of safeties. A little dirt here, a lack of lubrication there.....just sayin'. Plastic frames holding important parts I trust even less.
I don't think anyone has claimed that it's impossible for one or more safeties to fail, but as has been discussed, the pistol would have to have been cocked *and* have had 3 separate safeties and the sear all either fail or be disabled in order for the gun to fire without a foreign object interacting with the trigger. Occam's razor points to the idea that several people have suggested: an instinctive grab for the gun as it fell, causing a finger, thumb, or just some chunk of clothing or holster to get into the trigger guard, and then an unexpected and unintentional loud noise and a lot of pain. It's certainly not impossible that the OP told the whole story, but on the face of it, from a logical perspective, it seems unlikely.
As far as your ludicrous suggestion for testing goes, there's a much lower risk method; prime an empty case (or pull the bullet and powder from a loaded round), load that into the chamber, hold your hand *not* over the muzzle, and then smack back end of the slide into the table at the range. If you hear a pop, your gun failed. If not, it passed. You're still violating some basic safety rules, but at least you're not setting yourself up for serious pain and suffering if something goes wrong.
