This aint the first Glock I've seen fail and this is minor compared to some . Don't get me wrong I like Glocks well enough but it is a semiauto and they have more of a tendency to fail
I think most of the ones I'd read about were earlier .40 and .357 models. Aren't they the ones that had a more unsupported chamber coming up from the feed ramp? Seems like I read they changed it slightly to give more chamber support to prevent it. Maybe not?
