On Bf BC2 how do you use the UAV minigun? I keep on getting ...

On Bf BC2 how do you use the UAV minigun? I keep on getting killed by it but can't figure out how to use it to kill others

R = raise elevation
F = Lower
W = move the direction ur pointing
S = move backwards

mouse x axis, steer/look left right,
mouse y axis, inverted look up down

left click shoot, its easier to line up if ur not moving but run the risk of being shot

i haven't figured out if u can lock onto things, the whole aiming and shooting delay is still confusing

i died a bunch too bc i launched a missile with it on the ground at my feet