I am not used to the clamp on the reciever and scope at same time style ring and its harder but in a way actually nicer as less things to be wrong. If what your mountings to is straight (usually is with these reciever rails) and they machined em right which they did unless your scope is bent there is not much to do wrong. but these rings are strong like a regular rifle not the junk most ppl put out for 22 or bb guns.
Pros: strong enough to hold up
Cons: but more expensive then some rings
This review was written in the old system and had content requirements that are different than reviews written today.