respectively in this embodiment the first and second trigger adjustment control screws 118 and 120 that are used are grub screws but could be many different threaded mechanisms in this embodiment the screw thread 122 for receiving the screw mechanisms is cut into the chassis 110 of the game controller 100 as shown in fig2 and 3 respectively in other embodiments it would be possible to use threaded inserts with nylon locking systems or entire adjustment mechanisms 130 132 fitted as a complete component that could be inserted through an aperture in the controller chassis 110 in such embodiment it is envisaged that the user may be able to adjust the trigger settings without the use of a tool for example by providing a grip coupled to the screw thread preferably this would be integral with the screw thread as shown in fig7 and 8 in some embodiments the position of the trigger body 108 would be adjusted by use of a specified tool that would be provided to turn the first and second trigger adjustment control screws 118 and 120 which are located next to the trigger body 108 on the controller chassis 110 one advantage of the present invention is that it allows adjustments to be made to the trigger response such adjustment could be customised to suit the nature of the video game that is in use at the time of operation and the skill of the operator for example in combat style games involving a shooting function it is often the case that the trigger would need to be depressed a certain amount before any command was prompted the second trigger adjustment control screw 120 can be adjusted.