@Qwertyfox They do probably have some, but they dont normally use them. Organized crime in south korea traditionally fights hand to hand against each other, at most with knives and stuff, the government cracked down hard on them in the 1990s.
Not going around killing rival gangs or shooting public places up lets you go under the radar, so even something like that, were they really want to kill someone, isn't very common.
@orangebookair No you dont... Wtf man? The statistical chance of getting infected if someones blood slatters directly into your eye/nose/mouth is 0.1% (IF that someone has an HIV infection in the first place, which is relativly rare in south korea...)