[Vigilante Fervor], [Vile Acceleration] and [Speed Trigger] for fire rate.
[Continuous Misery] to make the Gas Cloud last longer.
[Rifle Aptitude] for bigger chance to proc Gas.
[Split Chamber] for multishot, grants more rolls to proc Gas.
[Malignant Force] for status chance and Gas.
[Primed Firestorm] for bigger blast radius.

Best used with [Assault Mode] on a [Dethcube] with [Energy Generator].