OK, I won the auction but I do not have the gun yet. I did get the serial # and was surprised to learn that it was made in 1990. I checked that out with Browning so it is correct. That year gun uses the Invector choke tubes, not the Invector Plus. It has a full in it so I will have to run down a modified. Does anyone have an opinion on the older system vs. the newer "Plus" system? Did I buy some trouble?