We have had news that the new DLC gun will be a shotgun. As there is only 3 shotguns within the game at the moment, there will be another one in the game.
The name of the shotgun is
nicknamed the “Boomstick”. We found this information out when Ryan (PrestigeIsKey) tweeted out to Michael Condrey asking what gun would be coming out in the latest DLC, Supremacy, he got a response from Michael saying #boomstick. We do not know whether this is the exact name of the gun until the DLC comes out.