Originally Posted by Karl Graebner
NominalBore,
The .410 and 28ga. share the same frame, and the wrist of the stock is diamond shaped. If you could score a .410/28ga. 2 barrel set you would have the best of both worlds!
Karl

I've found a couple but the 410 F/F seems to be a bit elusive at the moment. Most are choked M/F.