How about modding a Manker E14:
What you need:
* Manker E14 or Astrolight S41 flashlight. They're the same light under different labels. You can buy them from Amazon, DX or Banggood.
* 18650 battery tube. Available from Banggood.
* DrJones H17F driver. Available from Mountain Electronics. This is the most advanced and best clicky driver available. Has a temp sensor, moonlight, FET, and double-click shortcut to turbo. All modes are fully programmable. You can also add or delete modes at will.
* Four XPL HI emitters with your choice of tint. I recommend 5,000K neutral white. Usually available from Mountain Electronics or International Outdoors.
* Samsung 30Q 18650 battery
* Wire for spring bypass. 22 gauge copper with silicone insulation works well.
* Thermal grease. I prefer Arctic Silver 5 from Mountain Electronics
* Solder and soldering iron. I prefer solder paste from Mountain Electronics. It's easier to work with than wire solder. I use an old 40-watt iron.
* Basic soldering skills.
* Basic tools - small vise, tweezers, micro phillips screwdriver, etc.
Instructions:
* Disassemble the head of the light. This is the hardest part of the entire mod because the head may be glued. If it is I suggest strap wrenches and a lot of muscle.
* remove desolder the LED leads from the star and remove the star.
* reflow the old LEDs off the star and replace them with your LEDs. To make the light safer, reverse the polarity of the LEDs by rotating them 180 degrees and then connect the positive red driver wire to the negative bondpad on the star. This is a to protect against a quirk of this particular star where the screw holes come dangeorusly close to positive. Reflowing is easy: I place the star in a small wooden vise then heat the underside with my 40w soldering iron. When the entire star gets hot enough all the solder will melt. Remove the LEDs with tweezers and replace with the new ones.
* Remove the stock thermal compound with a Q-tip and spread a thin layer of AS5 thermal grease on the heatsink platform. Then install the star, screw it down and solder the leads.
* Unscrew and remove the driver retaining ring. Remove the driver. Replace with H17F driver.
* Solder up driver leads and then test the light to make sure it works.
* If all goes well perform a spring bypass on the battery compartment springs. I prefer to use 22 gauge wire instead of solder braid as the wire lasts much longer. I keep the wire inside the spring at the head to prevent a short. At the tail I wrap it around the outside of the spring.
* Replace the 18350 battery tube with the 18650 tube and load in your Samsung 30Q.
Resulting light is a quad-XPL HI, on a large chunk of copper with a direct drive FET driver. On a fresh 30Q it should easily do 3000 lumens out-the-front. Note however, that like any FET driver output will decline as voltage drops. The copper head will also get VERY hot. This won't hurt the light or you as long as you hold it by the aluminum body tube, but you will need to wait for the head to cool before placing it in your pocket. I also suggest setting the driver's temp sensor to its most sensitive setting.
I performed this mod myself. Mine wasn't glued making the entire mod pretty simple. Output is VERY high... my second brightest light after my 6300 lumen 4x18650 Noctigon M43. Beam pattern of the E14 is excellent... better than triples with the Carclo 10507 optic.