as long is it doesnt have a skirt on the base covering the 510 threading they will work on a mech...most ce4's wont but protank 2 etc will....you can always buy a 510/ego adapter for a couple of quid and they will then fit
Depends because protank for example needs air flow from underneath so won't work on an m16 for example as there is no adjustable air flow but would work on a nemesis or chi you I should think as these both have adjustable air flow
Sent from my HTC One X using Planet of the Vapes mobile app