Don't know if this has been found, the throw monster D-mini and the recent new 2-stage light FREE.LIGHT SPARTANIAN , their tail caps are compatible, my D-mini works very well with Spartanian's 2-stage tail cap.
EngrPaul said:It also works with the LILL.
How stiff is the switch on the Spartanian? I have the equivalent VINET and it's super stiff!