I’m not sure what you’re asking here. The fw3a driver is designed specifically to only fit the fw3a type of light. The body of the fw3a is only designed to work with that one driver design. You’re not going to be able to install a different driver inside an fw3a host or be able to use the fw3a driver in a different host. Those parts are specifically designed to work together.
Thank you for your answer! Checked flashlightlens.com, seems that they don’t have right size for FW3A, so the lumintop is the only option. I have sapphire glass from AliExpress, but it’s without ar coating.
I bought one of the launch units from Nealsgadgets way back in April 2019. I use the light regularly and am still very happy with it.
I remember writing some initial feedback when I first got it but after all this time I forgot most of them. The color temp I had wanted was not available so I went with the warmer 7A. I see there is now a 219C 4000k which is perfect but it is $$$! I can’t remember what CRI the 7A is but I wish a 90+ was available at launch.
Bummer to hear I could not buy “the same” light any more… should have bought a second one as a backup!