Here are the best 'Cold Warâ weapons in âWarzoneâ By The Washington Post Share In December, Activision decided to merge its two most recent Call of Duty titles inside of the popular, free-to-play battle royale, "Warzone." It did not go well. Beyond a slew of bugs that allowed players to turn invisible or infinitely heal themselves outside of "Warzone's" shrinking gas circle, the integration of "Call of Duty: Black Ops Cold War's" weaponry created a number of questions about the effectiveness of attachments (which are unique to "Cold War" guns) and how they stacked up against traditional "Warzone" loadouts based off "Call of Duty: Modern Warfare's" guns. Then people discovered the DMR-14.