This is the only source I can find and it is a little $$$.
I sent a product request to FT already
Ah... did you know that Fasttech is really Slowtech?
Better ask other vendors..banggood, wallbuys, intl. outdoor, hkequipment
Where is the LED? 
nice body but too bad it’s quite pricy 
And it doubles as a vase, which certainly justifies the purchase. Gotta tell the wife. 8)
All "copper tail cap" can be read on of the photos, but the tailcap is mostly aluminum alloy with some brass.
It has that brass cap over the spring and many flashlights with such cap have had problems with protected cells.
There's another that can do that too :)
