The weapon uses a blue electric ray that can affect multiple targets (it pierces the first target to reach another behind it) and cause electrical burns. With the skill Energy Charge, you can charge it for the equivalent of three rays for three times more damage at the cost of three times the ammunition. It's a good weapon for Chapter 3 and is not a bad choice until the end of the game. In dual form, it is a very good weapon (until the end of the game) and the best dual-wielded weapon.