Crew-Served Machine Guns -- 5.56-mm and 7.62-mm
Today's reading is FM 3-22.68, available online at the link, or in convenient CD format here.
The FM contains a separate chapter each for the M249, M60, and M240B. Chapter 1-3 covers operation from general disassembly to clearing procedures. Includes information on the M122 and M122A1 Tripod. Chapter 4 is on machine gun marksmanship training covering topics from: firing positions, night fire, engagement of moving targets, application of fire, changing the barrel, crew drill, transition fire, and other topics. Chapter 5 covers combat techniques of fire and Chapter 6 is on train the trainer.
I prefer the ring-bound hardcopy available at Commando Military Supply in Columbus, GA, which also has other educational materials.
Audentes fortuna juvat.