I have for sale one set of bolt and barrel for each of the MP18.I and MP28.II. The parts are in very Nice condition, Price for the sets are $ 1500,- for the MP18.I and $ 1200,- for the MP28.II, which has a reproduction barrel. The parts are in Storage in Louisville, KY and I will ship out when I arrive there for Knob Creek in Three weeks. Prices include shipping anywhere in the US.