If the military ever gives up on the 9mm, the .40S&W is the most likely replacement. The .45 ACP fans are just dreaming.
Okay mark this day down in history, because I'm calling it. The US Military will NEVER adopt the .40 S&W. It MAY find some use in small units but it will never be adopted for general use.
The main reason being that the .40 S&W beats pistols to death, and sends them all to an early grave. With the energy it generates, it really should be in a pistol the size of a .45 ACP, then it would have some real longevity.
