I bought this recently and it was shipped taken down. It is a nonejector gun. I did notice that the firing pins were protruding. Someone must have pulled the triggers after disassembly. The barrels dropped onto the action and fit fine. But when I tried to fit the fore end, it won’t go. It appears that I need to cock the action for the fore end to fit. How do I do that? Photos: https://postimg.cc/gallery/VzntH51