While watching an episode of "Midsomer Murders," I saw a shotgun like this for the first time:
Looks expensive.
French DARNE Shotguns with Sliding Breech Block -
Founded in 1881 in Saint Etienne by a gentleman named Regis Darne, this company manufactures double-barrelled rifles and shotguns. What makes them unique among dozens of other European hunting arms manufacturers is the rather unusual sliding breech and tilt lever locking mechanism of their guns.
www.thefirearmblog.com
Looks expensive.