I have been looking for this for a bit and am a little confused as to the interpretation...
Passenger is shooting a melta gun out of the fire points from a chimera that moved 6 inches (combat speed).
My opponent claimed that as the passengers were embarked, they count as part of the vehicle and must snap shoot as per moving w/ vehicles as opposed to shooting with assault weapons from infantry.
He could be right I dunno but sounds fishy to me.
If they move at cruising speed they must snap shoot as well? (Being assault weapons)