I know of no source for these, but I have seen them made by any good machinist? All you would need is to tell him what Material you need them made from and Let him get the Size, thread and all and it should be no real issue? Who would do it, or cost I'm not sure? I had some done Simular by a Guy In Seattle Years ago, he was a machinist for Boeing and made me a set, as well as some firing pins for surp-lus rifles I was repairing! It was maybe not cheaper, but worked better and I knew what I was getting?