The same reason there are so many 10/22's for sale. The Z3 is an entry level Swaro scope, and the most likely scopes to be bought and sold from their lineup. The only issues with the Z3 are: no parallax correction of any kind, 1" tube, and the possibility that they may not be as robust as some other scopes as they are built to be light.
The 4-12x50 is the highest magnification Z3 model. Not many scopes that have 12x at the upper end of their zoom range have an adjustable objective.
See a number of Z3's for resale. Are there issues with these scopes? Why so many resales?




























