So,
I love sleeper lights with copper heatsinks but need something bigger. I will post more pictures of the heatsink and details later but for now here it is:
2AA green camo hosts and despite being about 1inch shorter than stock it takes 2 14500 IMR cells.
FET 5 Mode driver with Low~High
3200 OTF lumens on High
copper heatsink
XHP70 Cool w/stock reflector cut down
Tailcap is a copper plug to lower resistace
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This build has very simple and plain looking yet incredibly one off custom. The LED is bonded to the copper and it has a custom UCL lens cut to size.
Fet DD 5 mode driver allows for good runtime on low yet has a show stopper 3200 lumens which make the entire light hot and impressive for a couple minutes 
I put plumber tape to make it harder to twist for on/off. Since I pocket carry this beast its better to have it be stiff opening for me. Also, the modes are Low to high so in case it did turn on accidentally (which it never has) it wont melt down or burn me.
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For Trade anything with copper heatsink in 26650 format or 18650 format.
Nice light. Any idea on the run times for the various modes?
No. It’s been hard to take current readings since the tailcap is a plug
You get about 5 mins on High but after 1~2 minutes it pretty much becomes too hot to keep in your hands.
On low well you can and should be able to do a couple hours since it seems to be 15 Lumens…
Again folks this a zero tolerance tailcap. Its just a machined copper plug by the builder.
Lets say it will be $110 delivered in USA.