TSV Extension Programmable Keys Controller Back Button Attachment Fit for Xbox Series X/S/Xbox One/Xbox One S/Xbox One X Controller With 3.5MM Headphone Jack, 2 Sets of Paddles - Walmart.com
Collapsed L3 joystick? : r/xbox
For those that have the Hyperkin Duke Controller, does the R3 button not work for you? I've noticed L3 works fine but can't ever get the actual button of R3 to work