Noxx,
I got a fixer-upper Camp 9 a couple months ago for cheap. I replaced the disintigrated recoil buffer, the broken hammer-strut bridge, and bent hammer strut with parts from Numrich, and put in a in a stiffer (16.5#) recoil spring from Wolff.
My understanding is the factory recoil buffer tended to disintegrate on their own, and the combination of that defect plus the fact that the factory recoil spring was too soft (12#?), the chain-reaction to the rest of the damage mine had was very common. Luckily, mine didn't have a cracked stock, which I understand is the next domino in the chain of failure common to the Camp 9 and Camp 45 because of the the weak recoil-buffer and spring.
My repairs (learned largely from the kind advice of some folks here at THR) worked great and it was a hoot to shoot until I managed to bend the bolt-stop spring reassembling the action a few weeks ago. I bought three replacement springs (they're cheap) from Midway, but haven't replaced it yet, because it's a "captive" spring and I haven't found the courage to just grab it with pliers and yank it out yet (it still works, but unreliably) and the replacement springs seem ever-so-slightly larger in diameter than the one I'm contemplating yanking out... Sooo, I don't know what I'm doing so maybe I better not push it. Any suggestions would be greatly appreciated.
Mine seems to be a early model with the single-plate bolt stop.
As far as keeping it virgin, I'll share something I ran across reading while I was still in the "find-out-everything-I-can-about-this-Camp-9-I-bought" mode: Paraphrasing: "A Camp 9 is a outdoors tool. It should be well-worn just like your camp frying pan is". ...Or something like that.
I really like this rifle. Enjoy it!
Les