Hi Fiorina, I can't add much to what skeetx has told you. A 20 ga. shell will fit loosely in a 16 ga. chamber... but is not safe to fire. But a 16 ga. shell will not enter a 20. ga. chamber at all. I have a 20 ga. L.C. Smith Ideal Grade with auto-ejectors, and as I recall, it was only the Ideal Grades with auto-ejectors that had the banjo shaped forend release escutcheon with roller. Auto ejectors are an option that would increase the value. The forends usually aren't all that difficult to remove, but they can be very hard to re-install if the triggers are pulled dropping the hammers. It is not a good thing to do with an L.C. Smith, and you can damage the forend if you attempt to force it back on without manually re-cocking the hammers. There was a special tool made to do this task, but there are other ways to do it. Here's what the special tools look like.
