My P9S has had some shooting done through it, but not excessive. When I learned about the recoil buffer, I got one and went to the local gunsmith to get it swapped out. He did so, but told me that my old one was just fine. I'd have thought the stuff deteriorated with age, but I guess 20 years or so is still fairly youthful for these things.
Surprised you can't get them exported; not like you're going to build a firearm around it.