User blog comment:Argorrath/Treyarch posts a message of zombies; possibly hinting to a DLC 4/@comment-60.225.61.85-20130803064624/@comment-356904-20130804101928

It's got a 98 in there because it's the carbine version of the Gewehr 98, which it replaced. The Karabiner 98 Kurz wasn't designed until 1935.