Always run the extracted files through a virus scanner like VirusTotal. Common Issues
This usually means one of the parts didn't download completely. Try downloading Part 2 again. ga251.part2.rar
Do you know what the is supposed to be (e.g., a map update)? Always run the extracted files through a virus
You only ever need to interact with the first file. Right-click ga251.part1.rar and select "Extract Here" (using a tool like WinRAR or 7-Zip). ga251.part2.rar