Well done sir, very thorough. I appreciate your efforts!
1 minor thing I noticed as I read through it which I can't confirm as being 100% certain of. My memory may be foggy on the subject it being 30+ yrs since I had any practical experience with the M60 but your explanation of applying lead with the LRF is exactly as I remember it. Track, lase & shoot. Afterwords though you state lase, track & shoot. As i said minor but poignant.
Edit: You actually addressed this with your techniques section.