Thunder Cage has firearm atk, crit rate, crit dmg, and weak point dmg on it. Reactor is non-attrib/dimension with skill duration and cooldown rolled (wonder how long it took to get that roll with Thunder Cage as the gun... LOL). External components are the Annihilation 4pc set, nothing special on the random rolls that I can see. Mods are:
Gley build:
The transcendent mod isn't exclusive to ultimate Gley so it seems like it would work on regular Gley too. I don't really understand why it's even there, the very first thing he does is switch to frenzied state so what's the mod even doing there?