Amazon.com: Rotor Riot Mfi Certified Gamepad Controller for iOS iPhone - Wired with L3 + R3 Buttons, Power Pass Through Charging, Improved 8 Way D-Pad, and redesigned ZeroG Mobile Device : Video Games
How to fix a non-clicking L3 and R3 thumbstick on the PS4 Dual Shock Controller : r/playstation
Where is R, L, R3, and L3 in a PS4 controller? - Quora