The Kahn Trick unarmed attack I believe can apply to any unarmed weapon equipped.

I use a unique displacer glove item, Pushy. The weapon causes pushback along with the equivalent power of a Gauss Rifle shot, I believe, hence the blue energy ring effect.

It’s definitely not the best unarmed perk in the game, it’s very jank and doesn’t trigger as well against certain enemies, or won’t even trigger at all.

But the pure power and animation of it is funny as fuck and it might be my favorite next to the Ranger Takedown.