[BobRockefeller]

I would very much like to mill my Girsan clone slide for an adjustable rear sight. And I really like the look of this one: CS1910 - Champion Bo-Mar Style Rear Sight Round/ Full Serrated Blade - Cylinder & Slide - Handguns parts and accessories.

Does someone here have a lead on the dimensions for the milling?

 

[BobRockefeller]

I found the dimensions somewhere on internet some time ago. It's for a 1911, but you could adjust for where you want the sight positioned on the Hi Power. Years ago, sights mounted like the C&S one were called in the "protected" position.
View attachment 4491

I can work with that, I think.