Now in GTA San Andreas with M16 grenade launcher underbarrel appears, only do not stand very close to the object in which you shoot still blast after a shot is such that it can easily fill up you are, the more it works in 2 modes: 1-th mode is a mode of grenades (works best for battles against helicopters); 2-th mode is a mode of missiles (best used in battle on a flat surface).
to activate a script in a 1-ohm mode G + R, to activate a script in a 2-ohm mode M + I to disable a script N + O for the shot, use sight + looking back, the first aim, and shot for click wheel.