Some pics from various sources of Fürst Pless guns with Berger's inline striker locks and more conventional break-open breech actions.
From "Der Waffenschmied Summer 2011", a publication of the German Gun Collectors Association www.germanguns.com
Shotgun made by Gebrueder Rempt, Suhl. Berger's locks and double grip Lefaucheux breech action.

Flintenkalle's collection: Combination gun in 11.5x40R / 16. Berger's lock and true Roux breech action, single bite with round locking bolt, operated by underlever.

DWJ 6/1984: Single shot 20 bore rifle, signed by H.Barella, Berlin, 1860s. Berger's lock and true Roux breech action.