No one can't predict the nature of the fight. Work back from worst case scenario and be honest w/ yourself. A gun that you can present quickly, shoot w/ speed and accuracy is a start. Having lots of ammo helps preclude the possibility of missing the opportunity to succeed. Absolute faith in the dependability of your choice is paramount. It is a weird world out there, a G19 and 2 extra 17 round mags is, for me, optimum. Lots of dryfire and lots of ammo and a shot timer will validate your choice.
You have to prove for yourself what really works. Practice, practice, practice.
mike r
