Kahr T9
As soon as I figure out the majority of inter-related complexities of CCW here in North Carolina I'll carry my Kahr 9mm and hope it isn't "insufficient" or possibly a Glock 36 and hope it isn't "excessive". And then there is the maze of places CCW is prohibited and the maze of conditions that have to be met before brandishing, much less firing. And Heaven forbid I miss the bad guy and hit some bystander. But even if I make a clean and totally justified kill on bad guy "Bubba" there is the distinct possibility of physical retaliation from Bubba's hillbilly relatives, etc, etc, etc. So, at least for the forseeable, I'll make due with my can of Mean Green pepper spray and hope it's good enough.