I had an older K6 from probably 10 or so years ago. I couldn't find a rifle to mount it on and get adequate eye relief (other than rimfires). As I recall, the specs at the time listed the eye relief at a little over 3". They currently list eye relief at 3.6" which would be a big improvement. It was a decent scope, but sold it off due to eye relief - sounds like maybe the newer ones are better?