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.in: Video Games
PS4 controller (JDM-055) R3 is always pressed. : r/consolerepair
Where is R3 on the PlayStation 4, and how do you activate it on PS4? - Quora