i just recently purchased a used Benelli M3. It has a shell extension tube on it. It should hold 7 or 8 shells right. I can only fit 2 in there. I am assuming that it is plugged. Why would anyone plug this gun. Anyway, the tube seems to be a one solid piece fitting into the receiver. I can't find anywhere else that it will come apart. Does anyone have any suggestions on how to get this tube off and remove the plug?
Brian