The Gravity Rifle is an unused weapon in Halo: Combat Evolved. The weapon is included in the game's map files, but does not have a first person model, projectile, or string. It will create a bright flash when shot at a nearby solid object, similar to the effect of the Flamethrower. In Halo: Combat Evolved, it is only possible to use this weapon through modding. In Halo Custom Edition, the weapon can be used in certain maps by using the devmode command cheat_all_weapons.