Firearms forums are full of threads that just sort of 'peter out'. Somebody gets a new gun, and is all excited about their upcoming trip to the range, so they promise a range report - but never get around to posting again. Somebody else has a gun with a problem, so they ask for advice on a fix, and promise to let everyone know if it worked - but never get around to posting again. I'm guessing you're even less likely to get "the rest of the story" when it's a second hand report, that requires two or more people for an update.
Bottom line, who knows why the Max9 malfunctioned - the owner might have accidentally dropped it 40 feet off his roof the day before, and been too embarassed to mention it or have it inspected by a professional gunsmith. Or maybe it was an unreported 'DIY trigger job' that didn't work out as planned. Folks are saying that nobody else seems to be reporting problems; if I owned a Max9 and had concerns, I would probably call the company (they have great customer service)!
Bottom line, who knows why the Max9 malfunctioned - the owner might have accidentally dropped it 40 feet off his roof the day before, and been too embarassed to mention it or have it inspected by a professional gunsmith. Or maybe it was an unreported 'DIY trigger job' that didn't work out as planned. Folks are saying that nobody else seems to be reporting problems; if I owned a Max9 and had concerns, I would probably call the company (they have great customer service)!