The gun has an odd feature on top of the barrel in that it seems to have a mounted Metal Head skull. Sig's Peace Maker has an elongated barrel and the same skull. The Peace Maker electrically charges particles & homes them in on enemies, with the ability to hit other nearby enemies.
The Peace Maker is a lethal weapon that fires electrically charged particles of Dark Eco. If multiple enemies are within range, the electricity will arc and separate, targeting all in its path. The energy shot will also home in on a target and the gun has a laser sight.
The Peace Maker is best used to take down bosses or a single powerful opponent, but can be useful for taking down a group of enemies if they are close together. It is best used as a last resort weapon, but in Jak 3 if a last resort weapon is required, the Mass Inverter or Super Nova might be a better option.