This is a true end game (Steel Path) build for Corpus tile sets or high level Index runs. Pure crit build maximizing radiation, viral, and impact damage types to handle all the characteristics of Corpus enemies. [Vigilante Supplies] significantly increases the lethality of this weapon even if you have no other mods in the vigilante set equipped. You can use rifle mutation mod instead of [Vigilante Supplies]; which having one of the two is an absolute must for this weapon due to its very low ammo capacity. This build is one of my best kept secrets in my arsenal, and has been through extensive testing and comparison to many other builds I have come up with. This one simply works.