My opinion is that the M9 will continue to be the pistol selected by the military. I have no complaints at all with the pistol itself, as it is easy to shoot accurately and very reliable (although some of the non-Beretta magazines the Army purchased proved to be poor). The standard ammo has been questioned, and I believe that there is a possibility for bullets of "harder hitting" shape to be developed. Any new ammo would have to equal the reliabilty of feeding that the current ball ammo shows. As sensible as it might be, I don't think that there will be a return to .45 caliber ammunition.