The cocking lug in the bottom of the receiver is different than mine in that the one in the photo looks like it has a line running down the center making it look like 2 pieces. It might be just the photo but in any event my cocking lug is 1 piece. I also notice that there is an exposed screw in the opening lever. Mine opening lever has no exposed screw. Mine just says model 311 in the side, no letter after the 311. So could be that the gun in these photos is an earlier gun because there are quite a few differences in mine. Yet the gun in the photos has a serial number. Mine does not.
