Slug is a single 18650 unregulated that is a clone of the Phillipine mod, right? I have a black eleaf with a beautiful sticker that can be removed. So the slug. Have you had any issues at all with it? I'm not a huge fan of single 18650s but I do like the look of the slug. Do you know what wood was used on yours? How different is it from the original? I assume the battery tube and firing pin are working without any problems. They are cooper contacts and a non-adjustable pin in the 510? If the mod is okay we can deal.