1 piece Para bolt designed to work with any of the receivers and function with 9mm. Will work with the Rhineland Arms Soumi drum mag adapters or the Sten mag adapters that were made by somebody else. These were designed to work with Metric firing pins but they do not have the correct cross hole. These do come with a raw extractor that will require some machining work. Pic to be added.
These are made of 4140 and heat treated to an Rc45. They require the use of a FN FAL para recoil spring. We have only a couple of these left. They can also be recut to work with 45acp.