Free: Contests & Raffles.
You may want/need more eye relief than what you get from standard bases/rings.If your solution does not work, look into offset rings. These allow you to move the scope forward or backwards more than straight rings do.Look at this link for a conceptual view of what I am talking about:http://swfa.com/BKL-06-Long-Offset-Dovetail-1-Rings-P47863.aspx