The candid feeling about this was pretty negative, but on the other hand - why not? It can be done and it is done IRL. It'd be pretty nice to e.g. cover the vehicle by using suppressive fire during being near presence of enemy.

Yeah, a vehicle isn't the best firing platform so it's not like it'd be OP or something, right? I don't see issues with it, besides, if you're shooting out a window, people can easily shoot you.(no window giving you a half second of protection, XP) Though there are some vehicles that don't have windows you can role down, so yeah, you're not like, going to be firing out of slits in tanks and such, more likely humvees and the MH-60. One thing that might help is limited aim range maybe?

There were mods for ArmA2 that allowed this, for example shooting from the side-sitting-platform of a LB.

LB? And so far it seems pretty positive to this idea, again, as long as certain things are limited, like the way your aim is limited when your in optics, + * and moving.

From the bed of the civilian off road truck would would be cool as well.

Yep, defnitly, but you'd limit this on stuff like tanks and attack choppers.(anks would be more a maybe becasue you can only fire out when you turn out.)

See #0002452.