I am going to replace the beretta px4 storm rear sight. But I noticed that the rear sight that came with my beretta seems to have a roll pin in the center of it. Does anyone know anything about this?
I think that is a set screw, as there isn't a hole in the top of the frame, unless someone drilled it. The photo isn't plain enough, but I would say it is a small hex or star set screw.
