Ed
What you said!
Reach out 300-to-600 yds and knock someone down...No one "keeps coming"...
I went to Marine Corps boot camp at San Diego in 1967. Qualified with the M14. After graduation, went up to Camp Pendleton for ITR. Carried and fired the M1. After a year in ground electronic repair school (in San Diego at the time, now at 29 Palms), went back to Camp Pendleton for Staging Battalion enroute to Vietnam. Carried and fired the M16.
Of the three rifles, I liked the M1 the best. Beautiful balance; great shooting rifle. However, on a fully automatic battlfield...
BTW, while the M16’s design demanded that you keep it clean, it’s initial reports of being prone to jam were, if I recall correctly,at least in part tied to a bad lot of Lake City ammunition. I ran some through my M16 while in-country. Something about the interaction between the propellant gases and the lubricant made the carbon fouling really adhesive. Very difficult to clean afterwards.