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The PlayStation 4 controller: What's new with the buttons and triggers (part 3, exclusive) | VentureBeat
PlayStation 4 controller - R2 trigger has came off one of these little hinges (more detail in comments) : r/fixit
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Trigger Back Button for PlayStation®4 – Nyko Technologies
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HOW TO FIX THE R2 BUTTON ON THE PS4 CONTROLLER (DETAILED) - YouTube
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