Hook a rubber band over the trigger arm (see picture). Let the other end dangle out of the bottom of the gun for now.



Cram the headset into the gun where the magazine used to be. notice how the microphone portion points down (so you can talk into the handle) and it's pressed against the upper portion of the headset. The headset fits perfectly so you don't need to secure it, just stuff it in there. Make sure the rubber band stays on the trigger arm side of the gun.



The pin coming off the trigger arm should be just off the call start/end button so that when you pull the trigger it operates the button.

