About the only used ones you are likely to find are those that MGM made some years ago for the old T-C Custom Shop. I think the longest they made were 22" with a VR, and they were both in .410 and 28. The ones I've seen (few) were marked T-C on the barrel and MGM on the rib. MGM didn't start making the current ones until a year of so ago, and they have had some production problems that slowed them down, also they moved to a larger facility.
I sure like the one I got. It has removable choke tubes. F and Mod came with it, but I also bought a Skeet tube direct from Colonial, the tube manufacturer. I think I may try to sell the two tighter ones since the Skeet works so well. But anyone who is shooting grouse in trees or on the ground might well want the tighter choke. I mostly use mine for quail and cottontails.
