I have a G22 that I'm going to use a project. As a preface, I have access to proper machine equipment and a skilled operator. Is there a specific spot where one would mill a slide for a red dot? No, I'm not buying another pistol or slide, I'd rather buy ammo. This is just something I'm considering doing as I think it would add to the "DIY" aspect of a personal build. Has anyone done this? Are there diagrams out there?