I missed mentioning the the ceracote was done at corlains this week by Greg and he did a wounderful job as usual .Smooth and no bumps

the base is a talley #252420
3.8" long
.600 wide
.460 high at both ends

There are 3 screw holes ,with in 2.6" which I liked .Only need just over 2 1/2 inch of even shank to install it and there is just over 1 inch to contour to go over the front of the receiver ,which works well on large martinis.

We took a while to find a clean looking steel base /ring set that didn't look added on/out of place

cheers Peter