Things I liked:these risers are excellent. the quality is very high.they do exactly what i needed them to do-raise the scope just enough to clear the front sight so as not to be visible in field of view but not be too high. clamp feature is very good. price is also good considering the quality. Things I would have changed:nothing. What others should know:these are a dull finish due to anodizing. if scope & gun hardware are high polish finish these will look different. the finish is close enough though.