To use your joy stick to fire weapons in helicopters , you have to bind your fire key in joystick in the weapons menu. All the while we have been looking at the wrong place for this, so instead of searching an option in helicopter menu, go to weapons menu - click the fire button- bind the joystick fire button.
Using a Joystick as a Gunnery Item
in ARMA 3 - QUESTIONS & ANSWERS
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To use your joy stick to fire weapons in helicopters , you have to bind your fire key in joystick in the weapons menu. All the while we have been looking at the wrong place for this, so instead of searching an option in helicopter menu, go to weapons menu - click the fire button- bind the joystick fire button.