The Covenant Fuel Rod Gun uses radioactive fuel rods as projectiles and has a 2x zoom. It cannot be dual-wielded.

Hunters have this weapon molded into their armor, and in Halo 1 it was also used by SpecOps grunts. It was not availalable in Halo 1's multiplayer mode, but was enabled in the PC version by Gearbox. It is not known if there are any differences in the weapons behavior between Gearbox's PC Halo version and Bungie's Halo 2 version.

The clip holds five rounds.