While the general workings of a M1911 and a M9 are similar, the differences in the two caused some branches, such as MARSOC, to never adapt the M9, instead keeping their M1911s after the official general issue of M9.
The biggest similarity between these two pistols is the single-action semi-automatic design. this means that when the slide is racked, they chamber a round and the hammer is cocked. Every time it is fired, it racks the slide until the last round is spent, upon which the slide locks open. This means that no energy is necessary other than racking the slide once and pulling the trigger until the firearm is out of ammo.
The M1911 used to be the general issue sidearm of the military until the mid 1980s, when the military decided that they wanted a sidearm chambered in 9mm, a NATO …show more content…
The army “tested” the m9. They ran flawed tests that stated that the smaller 9MM bullet with less powder was more lethal than the .45. They also concluded that it was more accurate, because they used sights on the M1911 that did not adjust to the range they were shooting. (50 meters.) They chose to switch over to this round for the same reason they switched from .30 caliber to 5.56MM in the sixties, to comply with the NATO statute that if a bullet did not kill an enemy, it could not cause excessive damage. (An exercise in very flawed logic.) While the us did not agree to this statute, it was looked down upon for using the more powerful rounds that usually killed instantly, instead of prolonging suffering or allowing the enemy to continue to fight.
The one advantage the M9 has over the M1911 is magazine capacity. The M9 holds 15 rounds, while the M1911 only holds 8. However, is it better to only have to shoot someone once, or to have to shoot them three or four times? The smaller caliber essentially negates the advantages of having more