I'm sure you've seen what a modded controller can do if you have played online on games such as Call Of Duty, Halo, Counter Strike or Battlefield.
Here's a really simple modification to enable you to shoot your Barret 50 cal like a P90.
UPDATE: There seems to a problem with certain controllers. There are Matrix controllers that use PWM for the LEDs and some which use a different method. To determine the type of yours, remove the battery pack of your controller. Above the right battery terminal, if there is a " TP-19" then it is matrix controller and it will work with this mod. If there isn't a "TP-19" than it is the newer CG version and it will not work.
Step 1: Ingredients
First off you will need,
A TT8 Torx Driver
Small Push Button Switch
Some Thin Wire, Any will do (I used IDE Cable)
An Xbox 360 Controller (Wired or Wireless, it works the same)
A Drill and Drill bit (To match the diameter of the thread on your switch)
Some form of surface to work on. (I used a window ledge, I suggest you don't)
Step 2: Dismantle
Taking the battery out reveals another screw, its underneath the barcode sticker.
There's 7 screws Torx screws to remove
With the buttons facing DOWN, separate the two halves carefully, paying attention to the motors.
Step 3: Drill
Find the best place to put your switch. Choose very carefully cos once you've drilled you cant remove the hole from your £30 controller!
Once you have found a place, put the two halves back together and double check there is enough room for your switch to go in.
If there is, remove the circuit board so that it doesn't get damaged and drill away.
Step 4: Switchin
Put the switch in your new hole. Make sure that you orient the pins so that they are not getting bent or squashed when the controller is back together. I had to remove some of the motor holder to fit my switch in.