Intrepid Phosphex Anti-Armor Weapon

Phosphex (a substance from the 40k Universe) Is a highly corrosive and incendiary compound which can be employed similarly to a flame weapon. It's highly corrosive nature makes it an effective close-range anti-armor weapon, however it is hampered by its lack of portability, requiring the user to shuck most of his gear to carry the tanks in a rig on his back and connect to the weapon via feed tube into the rear of the weapon.