For some reason this thread stuck in my mind.
PJ may have a good point and this gun may have been built as a live pigeon competition gun. If the single trigger is non-selective and the chokes are IM/F to F/XF the gun may well be a pigeon gun. Other characteristics not unusual on pigeon guns include larger and more substantially built actions, beavertail fore ends with or without pistol grip stocks, and safety non automatic or no safety at all.
If the gun in question is a pigeon gun, and you intend to use it for something other than clays (or live pigeon) then its possible you are sinking money into a gun that wont be very well suited for your purposes. You might want to give careful thought to what the gun is, what you want to use it for, and how much money you want to spend on re-stocking and trigger conversion.
