I agree with TJ! There are a lot of optic ready models out there, but if what you're looking for needs milled then have it done. You are in good company with people who like to modify their firearms! Is there one that you are leaning more towards?Good grief man, it's your pistol ... do what makes you happy.
That'a what BA & CM did with their $#!T. Perfect the style, make about a hundred differnt copies, and one day your pistols may also be immortalized in these forums.