User blog comment:Argorrath/Treyarch confirms that there will be no more gun DLC/@comment-4210490-20130411231047/@comment-1055346-20130411235521

But the game currently has 40 weapons in Multiplayer plus 25 Singleplayer/Zombie exclusives. The problem isn't that you need Gun DLC, maybe you just need to expand what you use in general.