For pete's sake here people, read up on you topic first. Use wikipedia I beg you ! Here i'll even add a link to make it that more easier. http://en.wikipedia.org/wiki/Flamethrower. Like what Scolar Visari quite rightly said, FLAMETHROWERS DO NOT EXPLODE WHEN SHOT. If its a liquid flamethrower for instance, if it was shot all that would happen is that it would leak fuel. Rant over.
OT: One reason is they always meant certain death for the user if they were caught by the enemy. They would undergo horrific torture for using the weapon and so are slightly frowned upon.
OT: One reason is they always meant certain death for the user if they were caught by the enemy. They would undergo horrific torture for using the weapon and so are slightly frowned upon.