PS4 Controller, USB Wired Dual Vibration PS4 Remote Controller with Back L3 R3 Buttons and 3.5MM Headphone Jack for Sony PS4/PS3|Gamepads| - AliExpress
PS4 Controller Layout for Destiny : r/DestinyTheGame
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
How to press L3 and R3. (On PS3 and on PS4) - YouTube