Pistol/Doom 3

The first real weapon you get, the pistol is the classic semi-automatic gun in Doom 3. In mid and close range, the machine gun is far more powerful, but the pistol is very accurate, so use it for ong distances or if you're out of ammo. Use it for enemies at long distance, or when you run out of ammo. But when they come closer, swap to something more powerfull.