Cube: Using fast reload composition? Bastion. Other compositions? Resilience. It is worth considering Vigor cube ONLY if it’s levelled up. Raw stats from a level 9 Resilience cube is better than a level 5 Vigor.
OL Gear: Elemental damage and ATK take priority as usual. Max ammo and charge damage / speed as secondary lines.
Great electro buffer that doesn't require a lot of investment. Can also be used as DPS with higher investment. Limited unit.