H&R box lock O/U 12-ga made by Lanbar in Spain barrel selector switch broken/jammed
The gun is a single trigger over and under made in Spain in 1980s and imported by Harrington Richardson.. On the tang mounted thumb safety there is a small switch that I would guess allows shooter to choose which barrel fires first. A single "dot" marks one side of the switch and a double dot marks the other side. The switch seems jammed to the side with a single dot. Just how doe this mechanism work? Does the firing pin become disabled on one barrel? How can I unjam this switch?