The first real weapon you get, the pistol is the classic gun in Doom 3. Comparatively weak but also very accurate. Headshots are more effective than body shots. It's pretty much the same pistol as the classic pistol. You can just see the whole thing in Doom 3. In Doom 3, the pistol is considerably more powerful, but often seems weaker, due to the fact that several of the weaker monsters have been “beefed up” compared to their classic counterparts. Best used to conserve ammo or as a backup weapon for when stronger weapons get close to emptying their magazines. In mid and close range, the machine gun is far more powerful, but the pistol is very accurate, so use it for enemies at long distance, or when you run out of ammo. It is also a worthy weapon against Trites, being able to kill one in two bullets, and against Lost Souls if your aim is reliable. But when they come closer, swap to something more powerful.