Bosco I dont know. I have never messed around with any of my guns sights. Some of the other guys in here maybe able tell you more about custom sights.
You might get more replies if you post in the gunsmithing section.
The only sight improvement that I ever did was to D&T a
S&W M-10-8 4" barrel, add a Weaver Base, and add a Tasco Red Dot.
I built this for bowling pin shooting, but, it turns out, that I prefer to use a carry gun with the iron sights.
That said, I think that Weigand Combat offers a fixed sight to replace the adjustable kind. I believe it just screws on, in existing holes. I recall reading an article about it on their site. Do a search on Weigand Combat. Bob