I would like to accomplish my own trigger jobs (to start) and I'm just wondering what hammer/sear jig is the "industry standard." Also, I've read quite a bit and come from an engineering background and I wonder why they don't show in detail these methods in Wilson Combat/Jerry Kuhnhausen books? I mean they "cover" it but not in an in-depth over the shoulder methods and processes. I will settle for nothing less than perfection.