hands down
I carried the M16 with 108 rounds in six magazines in the pouches. Four handgrenades. Usually two or three M375, 81mm mortar rounds. If you kill 108 or 126 of the enemy in any one engagement, you will be doing good.
I had the option to carry the 1911 pistol, but declined.
Several times I was able to give extra ammo to those who came crawling by.
My weapon of choice would be the M14. The younger brother of the best battlefield rifle ever made. I would have gladly born the additional weights.
Not meant as a jibe, but with even a little PM, rust would not have been a problem. -From someone who was continually in the green latrine.
{Vern; we went 65 days or so without a bath or change of clothes. The laundry was broken down or something. My socks became stiff as boots!
And my jacket/shirt took on the aspect of an armored vest -hard.}
Many of my posts here on THR are where I've espoused fire control and aimed, one shot shooting. The M16 spraying, I will testify, is useless.
Even at close jungle range. Trust me on that. At moderate ranges of 25m,
the 22 cal. round proved "ineffective." We were not hunting varmits.
This was Airmoblile warfare; the Cavalry -helicopters were our "steeds."
The only application where I would advocate for the M16 would be the urban, house to house, as in Bhagdad. Even then...