Originally Posted by
sharpshooter
Those style mounts are some of the weakest on the market. The front ring relies on the interference fit that will become loose the more times you twist it on and off. The rear rings have very little contact surface with the windage screws, and the screws and the rings get deformed the more you screw with them. This makes the whole attachment point weak. Not to mention this style set up is the hardest to get the rings straight.
Do yourself a favor and go with a piccatinny rail and a good set of rings that fit it.
My $.02