Amazon.com: Valve Index Knuckles VR Controllers 2020 Model
AMA: I've tried both top and bottom mounted gun stocks for the Index controllers. No review planned but the top mounted won in nearly every aspect (assembly and usage wise). : r/ValveIndex
Valve Index Controllers review: These revolutionary VR controllers need patience to hit full potential | PCWorld
Valve Index review: The best premium VR headset for PC gamers | CNN Underscored