The Halo 2 version of the Fuel Rod Gun is not available in Multiplayer. It features a 2x scope, and its projectiles move slower than those of the original FRG. The projectiles do not appear to have retained their signature ballistic arc from Halo 1, but instead seem to move linearly, similar to the Rocket Launcher. In Halo 2, the FRG is clip-fed, with a five-round magazine. It is handy in some situations, for example, it will kill a Hunter in two or three shots, and a Brute in just one. In Halo 1, this weapon was restricted to Grunts and Hunters, and the Grunts had a dead-man switch. In Halo 2, at least one Elite can be found using this weapon and it can be traded to both Covenant and UNSC players and allies during the course of the game. Many Grunts are depicted wielding the weapon; it is highly destructive and has great potential as a door-stopping weapon. Five rounds of "Green death" will annihilate enemies charging through a door.
This weapon is not available in multiplayer due to framerate issues, and because its overwhelming power would unbalance the weaponary on maps.