The same as the [Knell] pistol, this lil gun has a extra gimmick that only kicks in after a head shot kill. A buff called Overdrive which increases fire rate considerable and allows it to consume no ammo, needing no reload, endless fast firing. The buff lasts 8 seconds but any further head shots within that time refresh the buff, allowing for never ending bullet storm death.
It also has another gimmick that is good to use in a pinch, if you get to crowded, the weapon has an alternate mode that ejects all of the remaining ammunition in the magazine in a single burst frontal cone, like a flame thrower. For that mode increasing ammo max capacity increases the damage output, hence the mod [Trick Mag].