The Cyron face melter. You can substitute the riven for just about anything really. I just lucked into this one, and its extra magazine capacity is a huge help given the gun recharges rather than having a finite ammo pool. [Magnum Force] in its place is a solid choice. Having tested this setup a bit, you can easily stack hundreds of heat procs in the blink of an eye. Combine this with the viral procs and this will absolutely melt enemies. The radiation bonus is there for 1) getting another beneficial status proc, and 2) extra status proc for [Galvanized Shot]. With that, you will max out on 3 different statuses affecting a target, so an extra 120% damage is nice to have. Add in the base 80% status chance for a total of 120% and you are getting status procs like crazy. This is easily my favorite setup, mod-wise, for the [Cycron]. It is incredibly fun and strong.