I have two Rig v3s and they are great mods. Druga should be compatible. I think the Druga is 24mm and the Rig v3s are 25mm, so there will be a small ledge around the base of the RDA. The v3s also have an adjustable positive pin in their top caps now, not hybrid disks like v2. The new Descendant is a different story, but if your strickly talking v3 you should be good to go