I think yours is the second version, the ejection port is opened up and your peep sight has two screws. One larger and one smaller. Mine the peep only has one screw. My serial # is in the 7000 range.
The first 5 shot group I fired with it, with my old eyes, at 25 yards, made one hole. I can't wait to get the scope mounted up and see what I can do with a target I can see, Joe.