I have your solution if you are looking American. A Three Barrel Gun Co 12 X12 over a .32-40 rifle. Modified and full chokes with 26 inch barrels. It weighs about 7 lb. A lever in front of the triggers actives the first trigger to fire the rifle. Pop up rear sight provides rifle sight. Its probably only good for 150 yards or so.
These are rare but can be found.


Great-Great Grandson of D.M. Lefever
www.lefevercollectors.com