Previously, DMZ's Contraband weapons couldn't be modified, but Season 3 of Call of Duty: Warzone 2 adds a workbench feature to let you finally customize your Contraband items. Here is everything you need to know about DMZ's new workbench feature.
Where to find workbenches
Season 3 of DMZ adds workbenches to the maps, and these are new locations that can be found near Buy Stations. Workbenches are not marked on the map, but just go to the nearest Buy Station marked on your map, and the workbench will be close by. It looks like a black tool cabinet on wheels.
How to add and remove attachments
The workbench operates similar to the Gunsmith feature. You can choose to mod any one of your currently equipped weapons, and then add and/or remove attachments to get the build you want. Of course, there are some limitations here.