LRF, Used equipment is probably available. I agree it's not a path to riches, but not everyone is into disposable rifles, and a new barrel, which is probably the best choice for most projects, simply isn't desirable when the barrel in question isn't a standard item.. Preserving a complex profile, and saving original markings are sometimes the essence of the effort. Many here are not put off by a project whose motive is nostalgic more than utilitarian. I think there may be people drawn to exotic work just as there are folks drawn to exotic firearms.
