I saw the Berreta team had a couple open class guns and it used the rail for the optics mount . The mount was a work of Art , but for me it looked like it lowered the dot about .200 lower than what I did . I decided on the frame mount . Also theirs would require removing the mount to remove the slide . What I did is lower than a dovetail mount . If I went with a dovetail mount I wouldn’t get to mill and drill , where’s the fun in that . The barrel in these guns sits so close to the top of the slide anyway .