Well now that I've taken it all apart and did the research, (big sigh here) I've learned a few things. 1. The action is a #2 frame 12 ga. The action and stock match serial numbers. 2. The barrels and forehand are a TEN, yes 10 ga. The serial number match the forehand and barrels, so basically I have a wall hanger or I can cannibalize it and sell off the parts! I am sad to see this, but then again I paid $150.00 for it. It would look great in my office, so I'm contemplating what to do with it. Ever heard of such a thing? I've seen plenty of composite guns (different barrels, actions, forehands etc..) but all of the same ga. Neglect is an unforgivable crime!