The combination of hardpoints on the KDK-4 are calling to be used in a brawler, and that's what I did here. The build's focus is mirrored by the cooling efficiency as well as it's sustained DPS. Use your cUACs at range and while closing into your target. Don't hesitate to spam them as ammo should be plenty. Add the other weapons in when in range, the closer you are the more this thing hurts. Use your arms for shielding and rolling damage. All of your weapons are at a pretty low duration or instant as long as you're not double-tapping the cUACs in an infight.