just fit mine to the sp101 22lr. I had to file to shrink base and get offset (accommodate for the spring length)on left side. headed out to the range tomorrow. Sitting here at my desk they look great. Can't wait to try them at the range. If all is good I will be getting some for my six's. The darn OEM was a bit of a PIA until you figure out that you need to push the sight back to compress spring and lift right side up . This of course once the adjuster screw is within a couple of turns of coming off. Now I don't think I will have the same difficulty with the next one.
great product...great price!!!