Thanks for summarizing what I said to an extent. I think I was pretty fair (that was my goal). As we both said, one person's experience doesn't encapsulate an entire brand or model, but when asked I'll go into details (FWIW) but I always cover that caveat.
So much depends on the ammunition. Low power target rounds cause less wear than high powered ones. Stronger springs can slow down wear, just make sure they don't impede functioning.
Since we are this far into it. I have a Glock 30s gen 3 1/2 is the hump on the G4 Glocks as pronounce as the G3's? Or can u choose that with the back straps
IMO rnd cnt durability means everything. Firearms can be many years old making repair impossible or impractical because of the lack of part(s). Only the 1911 and perhaps the 92 have extensive support. Others are propriatory and will end.
Watches and arms are generally supported for 10 yrs after production. Many brands of watches use an outside OEM supplier for the guts (movement/module). The guts are usually available well beyond 10 yrs. This can't be said of arms.
Firearms can be many years old making repair impossible or impractical because of the lack of part(s). Only the 1911 and perhaps the 92 have extensive support. Others are propriatory and will end.
I would say it depends on the manufacturer and the success of the model. If the model is successful and is in the market for a number of years and the manufacturer stays around then you can usually still get parts. Case in point would be the Third Gen S&W semiautos. It's still pretty easy to find parts and mags, especially if you call S&W. How many years that will be true is definitely a question. It would be nice to find a pistol you like and be assured that support will continue until you no longer want it or are no longer able to receive it. However, much like automobiles there is a typically a finite shelf life. Though some designs seem to stick around as you mentioned.