I can't take a picture of it now. It is a 17-4, so I don't think recoil should be an issue. An SDM Mcgivern sight will not fit. I verified this by talking to SDM. He said that I could buy the bead and have a GS install it. I bought the bead but don't like the idea of messing with the original. I also don't want to permanently attach it. Really want to find something that will hold, but be able to take off without damage.