Great thinking! We can just arm our soldiers with concealed pistols!
Why expose yourself?
Well, first, that's their job. And second, because they're exposed anyway.
Rifles are offensive weapons. Pistols are defensive weapons.
Only someone who knows absolutely nothing about firearms suggests taking on a rifle with a pistol. That's the equivalent of "shoot the gun out of their hand" fantasies.
First rule of survival, DONT become a Target.
While Open carry has its place, I am not a fan.
Is this an Offensive or Defensive position?
Or someone desperate - or who knows there’s no other option. Go look up Mark Allen Wilson and the Texas courthouse shooting. He took on a guy with an illegally converted full auto AK type with a 1911 and drove him off at the cost of his own life.