OK, here's the state of the art. Keep in mind that I found this mod. Upon finding it with no identification in a readme file or anything I attempted repeatedly to find the author. Nobody would claim it. That might be a clue as to how successful it is....
It is still fun. Aiming is really lousy because the sights just don't work. Ideally you could set the sights for the proper range, wait on the uproll or downroll for the target to be in the crosshairs and pull the lanyard. Alas, it doesn't quite work that way.
However, I did stuff the thing with my patented Slightly Subnuclear Ordinance, so IF you happen to get a hit it will bring a smile to your face.
Oh, I bet you may want a link:
http://www.subsim.com/radioroom/downloads.php?do=file&id=1824.
Now it's in the wild. God help us all!