When I put it together with the few screws I had, it would cock, lock (though the forearm wasn't fitting perfectly... maybe the one screw in the spring mechanism would affect that... not sure yet), both triggers would engage, fire, both firing pins appeared to be in a locked then forward position, etc.

I just spent a couple hours getting the rust off the barrel and the grime off of the stock. Looks better so far. Once I finish cleaning it up and getting it together, I will post some pics!