Most of this course focuses on operating the platform efficiently and learning a good solid method of running the carbine. Distances generally involve shooting within 25 metres but I throw in drills and tests that pull us back to as far as we can go. On most ranges that's about 200 metres if we're lucky. I don't focus on firing hundreds of rounds just to fire rounds. I teach making every shot count.
For sights and optics, I can't stress enough that you need to learn how to run irons well and then run an optic. I run an H-1 and an Aimpoint PRO on my carbines but also run drills with the optic turned off so I can work with my BUIS.
I also have magnified optics on a couple of my other carbines but I tend to stick with non-magnified red dots.
If you are going to buy a red dot, don't buy crap! There are good offerings by Aimpoint. The PRO can be found for around $459.00 and it has an integral mount. The H-1 can be found for $550 to 650.00. The Vortex Sparc is okay but I've seen quite a few crap out. The Bushnell BRS has actually surprised me. One of my clients has run one on a few of my courses, he shoots a lot as well and his BRS is still ticking along.
Max, I try to keep my guns set up so that they all feel and operate the same and have similar sight systems. This way, I ensure consistency of manual of arms. We'll get the chance to play with a ton of stuff from stocks to grips to iron's, slings, chest rigs, mag pouches, etc. and I'll be there all week in case you want to tweak something and play with it after classes or on lunch. I really love shooting almost as much as I love instructing so, any chance for me to help someone out with a new set up is rewarding to me.
I hate being frustrated with any of my guns and I've been lucky to pick the brains of guys like Larry Vickers, Travis Haley, Todd Jarrett, Spec ops guys, ERT guys, Scott Rietz, etc. to find out what kit works and how to apply fundamentals to complex shooting problems. l also learn as much from watching and interacting with the folks on my courses as I have in courses where I've been the student.