@Ijerk: Well, flamethrowers don't usually have long range anyway, and it doesn't really take long for LN to freeze things. And since LN is just supercooled nitrogen, it should be easier to create than flamethrower fuel, and more common.

@Chameloshi: The reason flamethrowers are useful isn't because they burn the targets themselves, it's because the fire spreads, removing cover like dense foliage, and the smoke chokes people in tunnels or buildings. Hence their use in the Pacific in WWII

@Chameloshi: If you construct a properly insulated and operating rig for the weapon, using CO² as a cold propellant, and optionally a second nozzle for water for the "stickiness", it could THEORETICALLY be useful for stopping power.