My source is from watching a lot of high round count reviews from reputable gun tubers, and reading lots of first hand experiences/skimming forums. I haven't seen anyone have an issue with the RXM. I've shot it a few times too. It's made to spec as a Gen 3 clone, so it's engineering is solid. The really convincing evidence for me is the recent Honest Outlaw video where he says he's done-zo with Glock, and proceeds to show all the malfunctions he's had over the years. Glock is a great gun, it just seems you can get more for your money with clones now. I'd happily trust my life to a G19 or an RXM, but if I don't have to pay more, I won't.