Enough screws were provided so that the mount fit many different types of rifles. It worked on my pair of Norinco ATD-22s without any problems at all. It also provides enough forward and backward placement of rings to fit any scope and required eye relief. It provides enough additional height to mount a 56mm objective scope
Pros: Works with both types of rings, easy setup
Cons: A little expensive for what it is
This review was written in the old system and had content requirements that are different than reviews written today.