Indeed.
Springs, clips, screws, pins, etc. are not difficult to come up with - and some manufacturers can custom make them at very affordable prices, if they're not already available.
It is the rest of the bits that one needs to obtain and guard, to keep the P-series running into the future.
Guide rods, recoil spring collars, the recoil spring collar retaining clip, slide and safety parts, hammer strut, sear blocker, ejector pivots, magazine latch halves, etc.
I have two complete parts kits (minus frames) and one that is nearly complete (missing frame and a few bits that live in the frame), in order to keep my P95 running for however long it can survive.
...Not that I've ever had parts break or wear out. My only "failure" was the recoil spring retaining clip sending itself into the nether, in the desert, during the winter (~16" of snow), in 2001 or so. I probably installed it incorrectly. I had taken apart the assembly for deep cleaning the week prior.