Things I liked: These rings center the scope on the receiver, rather than offsetting it.
Things I would have changed: Nothing!
What others should know: Perfect fit on my BSA Sportsman HV, with a 40mm scope. I had to spread the clamping area 1/4 turn for the rings to slide on the receiver grooves. I debated over ordering these or the rings for the 14mm wide dovetail.. This product was the correct choice!