I purchased these for a Henry 17HMR lever action rifle. I installed and leveled the scope and found that the rings don't hold the scope centered over the receiver. After the install, I looked through the scope and the reticle is level, but to the left of center of the receiver. When the rings were turned around, the reticle moved to the right of center. I guess it'll take a gunsmith or a different set of rings to get this lined up.
Pros: Simple to use
Cons: didn't line up with barrel
This review was written in the old system and had content requirements that are different than reviews written today.