1-year limited warranty
Things I liked:Excellant quality and customer service.
Things I would have changed:I would make the ring bottoms out of steel. The aluminum is very soft and if you are not careful, you'll strip the windage adjustment screws out.
What others should know:Adjust the windage on these rings very carefully. Like rolling a twig between your fingers. After stripping mine, I called Bsquare and they sent me out a new set. I can't say enough good about their service. Good design but could be better if made from all steel.
Things I liked:These rings are very adjustable. They are the last resort for difficult to scope rifles, and they work. Well worth the money if you need them.
Things I would have changed:The instructions need to be a bit more clear about how to set them up.
What others should know:They are tricky to adjust until you get a good understanding of them.