Mackay Sagebrush don't they load a special 160 grain bullet in the 9mm to make it sub sonic?
Not that suppressors really matter I guess for infantry but I have a feeling what ever pistol is next will have a threaded barrel and be chambered in 45.
Dink
Dink,
147s are standard for 9mm subsonic. I honestly do not see a shift away from the M9 for a very, very long time. What I would SPECULATE is that individual units will more and more likely augment their armories with whatever tool they see fit to get a job done.
Much like now, where some mil units purchase glocks or motorbikes or 4 wheelers, units will be given more lattitude to equip as they see fit. A new pistol will likely be added as an option, rather than an all out replacement. At least that is my guess for the immediate future.
Quite frankly I really have no idea what will happen. My guess is just as likely to be wrong as the next guys.