User blog comment:Argorrath/Treyarch posts a message of zombies; possibly hinting to a DLC 4/@comment-173.71.208.40-20130803003926/@comment-212.187.19.187-20130803095231

Well the Scavenger is a wonder weapon too, but looks like a normal (slighly futuristic) sniper rifle. The Mauser will probably just a new "regular" weapon, like what the Remington New Army Model is to Buried.