Another angle: if they need a downloadable pack, it's possible that Activision provides a direct link, but I need to verify that. Searching in my knowledge base—I recall that for older titles, sometimes the language packs exist as separate downloads. However, for Modern Warfare 3, which is part of the 2023 release, most platforms include all language packs by default. So maybe the user doesn't need a separate pack, and instead, adjusting the in-game settings is the correct approach.
