Yea, that's what I thought too. It's kinda academic though becuase I'll never sell. But knowing the range is useful for guaging the overall value of the collection and where this gun lies in the value specturm relative to the others.
I would love to know the history of this mod. What was the PO _thinking_? What motivated this mod? Who did the work? Was he _paid_ for it? Was the PO happy with the results?