5 rules of a gun fight:
1) gun beats no gun
2) fast beats slow
3) a hit beats a miss
4) big holes beat small holes
5) two holes beat one hole
Getting a gun out and into the fight will often force the opponent to take cover.
BTW, I carry a .22 caliber tool everywhere I go. I practice hitting six inch objects at distances from seven yards to twenty-five yards with as fast a presentation on target as I can manage. The secret is front site focus ... even my home defense tools are set up with the light located forward on the tool such that the front site is illuminated at the edge of the beam too.