Why won't Raul Tejada in Fallout New Vegas equip another weapon?

Raul Tejada in Fallout: New Vegas is a companion character with a unique personality and backstory. He prefers to use his trusty revolver, which reflects his character as a former gunslinger. This choice is tied to his past and personal preferences, and the game design ensures that he maintains this specific combat style, enhancing the player's experience with him as a companion. As a result, players cannot equip him with other weapons, as it aligns with his established character traits.