User blog comment:Argorrath/Treyarch confirms that there will be no more gun DLC/@comment-4210490-20130411231047/@comment-1055346-20130411232056

At least they did it at all. And of course they could not have the time or ability. They have to produce four new multiplayer maps and a zombies map in just two months. Considering all the new models and shit that had to be built for Mob of the Dead, it's quite understandable why they didn't put in a new weapon. 2 Months just might not be enough time for them to build four multiplayer maps, a massive zombie map packed with new content, and a new weapon for multiplayer that needs multiple models with every attachment and needs to be balanced with every gun/perk/attachment in the game