Just got a ULTRAFIRE WF606A CREE from GLOWBUG. Had intended to put a MCGIZMO MCCLICKY in it so I would have a forward clicky. Well I had an extra tailcap from a ROMISEN RC-G2 so I tried it to see if it would fit. And to my surprise it fits perfect, and works perfect.
Picture shows ROMISEN TAILCAP on the ULTRAFIRE WF606A.
Picture shows ROMISEN TAILCAP on the ULTRAFIRE WF606A.