Why is it years ago we heard the 9mm was worthless, and these days most elite military units actually prefer it to the sacred .45 ACP?
The Marines would differ with that assessment, and you would likely have to speak to the leadership of each of the 9 mm equipped elite units to ascertain "why." The answer, in some cases, is that they don't have a choice. I do know a few SOF types with multiple deployments and numerous firefights behind them who are not happy with the 9 mm.
