The M7057/Defoliant Projector, more commonly known as the M7057 Flamethrower, is a UNSC/UAOS heavy ground weapon. The M7057/DP, is a standard chemical flamethrower, which projects and ignites a stream of a volatile, semi-liquid fuel. Flamethrowers are cumbersome and relatively difficult to tactically employ. Referring to the M7057/DP as a weapon is a bit of a misnomer as the "DP" in its nomenclature indicate that it is a 'Defoliant Projector' — to be used to rapidly clear away heavy foliage for in-theater construction projects and to destroy new or persistent growth from emplacements and/or hardened military assets. It is normally used with a cart, instead of being carried.