I just got mine last week and it came with a card that said it was produced just a week before I got it.
So on the premise that you can never have enough information, my serial number is 31xx, so I guess that defines how many have been made, being in the 3100's?
While still not delighted with the required spring replacement at each 200 rounds, I don't really have an issue with it.
The $5 for a spring is only a small fraction of what the 200 rounds of ammo for each change costs, so that's not a big deal for something that keeps the R9 in top reliable form.
And being a specialized self defense pistol and NOT a range plinker, this pistol probably won't see much more ammo through it than to insure it's reliability with that ammo.
Training?.. What training? It's an up-close and personal kind of pistol that only requires that you know where it's at and that you can get ahold of it.
I think what I'll do is to just get a dozen of the darn springs and keep them in the case. Probably won't ever have to buy them again if I go that route.
By the way, this R9S Stealth is a real sweetie! My favorite "small" carry pistol, a 1974 PPK, has now been permanently retired to the safe.
The only decison yet to make is if I want to mount a CT on the R9, although I'm leaning in the direction of not to.