Where is R3 on PS4 Controller? Learn where to find the L3 & R3 buttons
PS4 Controller, USB Wired Dual Vibration PS4 Remote Controller Joystick with Additional L3 R3 Buttons and 3.5MM Headphone Jack for Play Station 4 PS4/PS3/PC Platform : Amazon.ca: Video Games
How to Fix PS4 Controller Analog Drift (R3 or L3 not working) - iFixit Repair Guide
Will pressing the L3 button on a PS4 controller damage it like jumping or editing with it? - Quora
2x Joystick PS4 PLAYSTATION 4 Analog Command Thumb Stick Buttons R3 L3 Red | eBay