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"WarheadLauncher" is the name used in the UT code for the Redeemer. Presumably the name came after the weapon was actually coded.
It uses WarHeadAmmo as ammo class and WarShell and GuidedWarShell as projectile classes. The guiding code is not part of the weapon's script, WarheadLauncher only passes PostRender calls to the current GuidedWarShell.