Among the Pistol community, gents like Ernest Langdon, Scott Jedlinski, Gabe White, etc are known as some of the "go to" guys for a pistol class. I'm starting to get into rifles again, the last time I actually touched anything resembling an AR15 was when I was in the Marines with an M16A4, and I want to get back into the rifle/carbine game. Any recommendations for instructors/classes? I want to know who the "go to" guys are.