It’s not a holdout weapon, it’s a pathfinder.

Definition/Summary:

Book of Revelations

• Horseman of the apocalypse Pestilence, War, Famine and Death “Thanatos”
• He is he only one with a name. Color is often translated as “pale”, “pale green”, and “yellowish green” Depicted as a Skeleton with a scythe

Expanded info:

Add/Misc:

• 1932 Western Film. Cowboy saves a town from a gang of bandits
• May be referencing the four types of enemies as the four horsemen of the Apocalypse.
• Fallen, Hive, Vex and Cabal