well bro, bullis are compatible since it has 510 threads(get an ego-510 adapter), just that it looks awkward on the lavatube with the adapter on. Its damn long, trust me. I used a echo cart on it, it looks damn strange looking. Hahahaha. I'll stick to dcts on lavatube. And the stock atty, I kinda like dripping at 5.1V with it. Though troublesome.