Right-click the first file in the sequence ( .001 ) and select "Extract." The software will automatically pull data from .005 and the other parts to reconstruct the original file.
Because the game had distinct regional versions (NCSoft West vs. Innova/4Game for Russia), "Ru_B&S" files often refer to: Ru_B&S.7z.005
This file is not a complete archive on its own. When large datasets (like high-resolution textures or game client data) are uploaded to file-sharing sites, they are often split into smaller "volumes" to bypass file size limits. Right-click the first file in the sequence (