Can you send me a link for that 86mm reflector, via PM? thanks
If you don’t get a pm, just search “86mm kd reflector” there are a lot of threads and detailed instructions too. It’s an easy mod in the courui
Got PM from FmC 
also have my first Courui on the way 
There may be other camera hoods/adapters that cut down on the amount of work involved, but with the parts that Linus & I used, I wouldn't call it easy! :)
edit-
Build thread for anyone interested.
Well I haven’t done it yet, but it looked easy. Easier than the mini spotlight ?
In that context, it's relatively easy :)
That’s what I reach for these days. Nice light. Very high quality reflector but limited in diameter. Fits well in the pocket of a cold weather jacket. Get’s the job done by brute force lumen generation in turbo mode. Got asked if I was signalling the I.S.S. with it a few times back in the summer.
This is my best thrower to date. Im using the well marketed and available everywhere Trustfire trip xml t6 3800 lm as a host for three parallel XHP50 j4 5700k being driven by a blf inspired direct drive (Adventure Sport Flashlight design). All of my 18650’s currently on hand suck so I unscrewed an extension so I could use two 18350 eFest IMR 10A cells plus a small spacer. By method of measurement whereas I place my ammeter in series connection to the light and the meter it measures an amp. pull of a lil over 4. My ammeter is swing arm and the leads are 10 inches long 18 gauge wire. The mcpcb lead wires are 20 gauge silicone wrapped.
And oh yeah I almost forgot the part most in question for me. The original XML’s sit on a thin 45mm piece of aluminum. So I added a 4mm thick round aluminum heat sink joined with heat grease. In order to create more exposed surface area, I made thin grooves on the back side. The business end has the original high polish finish.
Links to some pics of it including beam shot.
https://docs.google.com/uc?export=download&id=0B6fTIDjnPfzCd0wtOFV4a1lIQzg
https://docs.google.com/uc?export=download&id=0B6fTIDjnPfzCV3JjN0ZmN0ZzUkk
https://docs.google.com/uc?export=download&id=0B6fTIDjnPfzCcTdUWkduR09MTGs
https://docs.google.com/uc?export=download&id=0B6fTIDjnPfzCc2hPMVVkbEUtYVE
https://docs.google.com/uc?export=download&id=0B6fTIDjnPfzCaHFUU3hycmJ2MjA