Hey Playa...
LOL... just to make it nice and confusing... there are two types Javelin missiles... you are right mate, there is an anti-tank one made by your guys.... but our group never saw that.
This is the one we used under s-a-m's
http://www.jed.simonides.org/missiles/sam/sam.html
Never heard of the vulcan mate.... as we only used to play at being soldiers, some of us were slightly uneducated in the use of weaponery
Better page for you...
http://www.armedforces.co.uk/army/listings/l0049.html