As I've discussed elsewhere, I am committed to becoming an expert with the Beretta 92 platform. I will put many thousands of rounds downrange and I want to learn the platform as much as possible. That said, my Google searches are always clogged full of dubious-looking junk.
So, my question is simply this: who is considered, currently, to offer the most "legitimate" 92 armorer course? Or armorer courses, in general?