Found this old timer today snorkeling in Lake Pend Oreille, north Idaho. Found resting on some rock rubble in about 20 feet of water, otherwise would have been covered by sediment long ago. Can't seem to find any pics online of similar looking lever guns with short magazine, octagonal barrel. Also pretty unusual looking front sight remains. Usually i find fishing lures and once in a great while a fishing rod while snorkeling, but never pulled us a rifle before. Any help on an ID would be appreciated! Also any suggestions on conserving the piece for a wall hanger?