That was my approach when I called him. I can only imagine what he has laying around, however i got the distinct impression that he really stopped work some time ago and was emptying his shop of old stock. I guess I was lucky in getting the Andrey extractors (they are proprietary to his bolts). He said he sent me his last two. I also asked about recoil spring guides (none), bolts (none) and barrels (none). Most internals I was able to get from BWI before they collapsed. I also had a very reputable gunsmith make me two billet recoil guides (perfect, solid billet!) that will NEVER deform. Recoil springs are available.
The big issue is the trigger bar deforming (the guns were really made for limited use), about which John Andrewski is the absolute master of remaking. He re-welds using hardened steel and forms them perfect. Good for 10K rounds (I'll be dead by then). Most people don't shoot the guns much, so the examples out there are usually almost new condition.