It is the NDB7875 9mm from DTR.
This is the GB:
https://laserpointerforums.com/f55/ongoing-big-boy-3x18650-host-30-a-77100.html
Now that I think about it, I wish a bought a couple more
The only thing I don't like is that the holder has all 3 springs in parallel, and the driver need the batteries in series. So one of the batteries has to go positive side to the spring which triggers my OCD. Never found a replacement holder and didn't know how to switch the spring location. It works though as long as I use a flat top battery.
PS. You given me reps twice this week don't worry about it
. Thank you for getting me to 8 figures :beer: