This is a simple ring set that extends the scope forward or back of your rifle/air rifle. After fitting these rings onto my dovetail receiver, and tightening them. I found that the rings were lopsided towards the right. Though this is a minor issue, I fixed it by inserting some metal pieces inbetween the rings and the adjustment block(s). Now there isn't much slop. Other than that minor issue, these rings do what their supposed to. The openings under the scope allow you the option to use front sights (fiber optics, etc.) if you have them. Overall great product for the money. They hold the scope firmly and after repeated usage, I have found that these rings don't move once setted in. Though I wish B-Square included some of that tape inside of the rings, you can simply put a layer of electrical tape. Well that about sums it up, thanks again OpticsPlanet.
Pros: Simplicity, Versitile, Clamps well, Great value, and Well made
Cons: Lopside issue stated in comment....
Would recommend: Yes
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