I have tested this build on Level 130 Heavy Gunners, and even Level 130 Symbilysts to great effect. It is designed to compliment a Melee Weapon with a Heavy Attack Corrosive Heat build(I use a [Tenet Grigori]) that boosts the [Shedu] Damage with Melee Kills while benefitting from the increased Combo Duration and Swap Speed allowing seamless and Synergistic Gun and Sword play.

The Heat and Electrical Procs hold the enemy in place for the Melee Kills which in turn Boosts Primary Wespon Damage. [Hunter Munitions] leverages the Viral Procs with added Slash Procs. For added fun use Secondary Dexterity on a Secondary weapon that compliments your Play Style.

Any Riven that boosts Critical Chance and Critical Damage may be substituted.