[Kaylee]

Weapons like the pistol, minigun, flamethrower, syringe gun, and smg keep critting for a short period of time as long as you don't stop firing, so 5 pistol shots critting is really just one single "crit event" for the pistol. The shotgun, rocket launcher, and grenade/sticky launcher are the single-shot-crit weapons. Also, I'm 99% sure that a scoped-in sniper rifle is the only weapon whose damage depends on where on the body you hit. (Specifically, auto-crit-if-headshot)