TR Mech Mod
This thing is a monster. Seriously. It's an 18650 mechanical mod, spring loaded button with quarter-turn lock, adjustable center pin, made from stainless steel and it feels like a bar of iron. Only spikier. Unique diamond and ridge pattern give excellent grip and there's no question that in a pinch it would make a hell of a weapon. Honestly we're a little intimidated by this one.
Authentic, from Cigreen. Currently available in gold color only, because if you're going to stand out this much, might as well go all the way.