Weaver Base Top Mount - 61M

very good.

Perfect fit for my rifle. No problems mounting it. I would suggest using some lock tight on screws, I always do when mounting a scope base.

standard mount for weaver type rings.. standard of the industry. been around forever and hopefully will remain available for years to come

Might not be the products fault but I have to buy my own screws and cut them to fit. There is not enough meat protruding on the end of these screws to sit with any stability during recoil (44mag lever gun).