Right before the casino heist, there is one last prep mission (Up, Up, and Away!). Late in the Las Venturas act, there is a great opportunity that awaits players.
The good news is there is a glitch that brings it to the next level.
It will instantly kill enemies and blow up vehicles in less than a second, but due to its rapid-fire tendencies and limited ammo, only so much damage can be done. Players already know the minigun is a powerful weapon. There is a valuable glitch in GTA San Andreas that allows players to have unlimited minigun ammo.