A weak pistol, minimal battle power. This weapon is very bad for combat as seen in MnB2. Luckily this isn't too commonly seen as the M-14 and M-16. You have about same chances of getting a soldier with this weapon as the chance of getting a soldier with M-60, M-40, Mossberg 500, or M3 Grease Gun. However, a soldier with high accuracy can actually kill someone if placed on a trench near the edge of the forest, as when a VC soldier comes out of the forest into the open, he is very close to the soldier with pistol, which were made to kill someone from close range. They are not effective when assaulting enemy positions, making men with pistols best either as meatshields or as one sent directly to the enemy so they might have a chance of killing him or getting into a CQC fight.
It is also seen in Mud and Blood 2.
The M1911 (the '1911' suffix comes from the year it was adopted by the US Army, after extensive tests) was the standard pistol for the US Army right up until the early 1990s, when it was replaced by the M9. It did not change much from the original award winning design, apart from minor alterations following WW1. 1.9 million of these were produced over the course of the Second World War, and many of them would still be being used in the Vietnam war. It is a semi-automatic pistol which fires .45 caliber rounds and has a capacity of 7 bullets.