Good heads-up, ctious.
A long time ago on GT, like 9 years or so, a group of us combined our knowledge of failures and the the round count when they happened. We used it to create an "aircraft maintenance" type of schedule for Glocks. The idea was to have set cleaning intervals and to replace parts/springs on a round count basis before they caused a failure.
I kind of doubt that information is still around, but this is the type of failure that would be a good data point.