I can't imagine what you might need for spare parts on an R93. Maybe a spring in the trigger or a screw that you chip the head on, but nothing really breaks in an R93. The R8 is much more finicky and a completely different story, but the R93 is a tank.
My son is the main gunsmith at a gunstore in Allgäu Germany that up until a few years ago, sold more Blaser rifles than any other gunstore in Germany. He rarely needed to order any replacement parts for an R93, and when so, mostly for Austrian professional hunters that really abused their rifles daily.
That's also a small part of the reason that Blaser stopped the manufacture of the R93 a few years ago, they never wear out, and they were cutting deeply into the sales of the hunk of shit R8. So Blaser stopped manufacturing them. My sons boss, wanted to buy the machinery, and continue making them, since the patent ran out, but Blaser just doesn't want the R93 on the market anymore, they want to sell R8s.
So my sons Boss, got together with Meinhard Zey, the weapons engineer who originally designed the R93 for the Blaser company after Horst Blaser sold it, and they developed a rifle even better than an R93, with many advanced technical and safety features. It is currently the most sought after production rifle in Germany, and is called the Jakele J1.
You can look at it on their website. Currently there are no plans to import it into North America, as they are having trouble keeping up with demand in central Europe.
But buy the Blaser R93, it will be the best and most accurate factory rifle you own, unless of course you buy a Jakele J1.