Simply remove the screws as shown on the following spots. Don't forget the 'hidden' screw underneath the bar code behind the battery cartridge (it is shown in the picture). This one gets most people the first time. Once this is done place or hold the controller with the top facing down and remove the bottom half of the controller (shell). It is done this way so none of the buttons fall out when taking it apart. Just take your time and you will have it apart in no time.
How to Open the Xbox 360 Controller
This post was posted in Xbox 360 Tutorials / Install Guides and was tagged with xbox 360 controller mod, Xbox 360 controller, 360 controller, how to open 360 controller, how to open xbox 360 controller, 360 controller mod, 360 controller tutorial, security torx t8, opening the xbox 360 controller, opening the 360 controller