Good questions.
For both you need a scope to really see anything beyond a few hundred meters ;)
Yes, the 26650 and L2K are different beasts. The 26650 unbranded LEP is a fine flashilght for the money, but the L2K beats each and every flashlight out of the water, especially after the first 5 minutes
Thanks for the quick reply. So is the small brightness drop we see on turbo due to the laser heating up? If you let it cool down and turn it on again will it come on at full brightness? I want the 20350 version but will only use it for less than a minute at a time. I just want to be sure that it’ll come on at max brightness even with those weaker cells.
If you look at the graphs, you can see that the drop is very minimal (that's why this is such an interesting light). You won't be able to notice the difference. This is not a high power SBT90.2 flashlight that drops to AA flashlight territory ;) in 2 minutes
Ordered the short version with the coupon.
Thank you.
Order placed with coupon for long version. Thanks
What diameter and thickness are the filters?
Edit:
I found it on your main site, 55.7 x 1.8 mm.
Somehow I missed it on the first read through.
Anybody know where I can buy a clear glass replacement?
Awesome and thorough review 
Maybe someone who has purchased from Maxtoch can inform me: does the “full kit” option include the batteries and filters? Looks like “full kit” is the only option for both lengths of the Xsword L2K. The long version has a small photo of the flashlight with batteries, charger, and holster in the options thumbnail but does not explicitly list what comes with the full kit. The short version has no options thumbnail. Both show batteries under the “Available Accessories: Sold separately” section 
Edit: Can confirm the short version full kit includes all the accessories shown in ChibiM’s review except for the lanyard.
I asked them and they said it comes with 20350 cells. Now the real question is what do I do? Do I buy this or the X80GT which is much more useful or do I wait till something better comes along.
That's the question :D
Both have their own purpose. The X80GT gets beaten by other high power flashlights, the L2K doesn't get beaten unless you pay $2500 more for the W50 or even more for a MicroFire
About outlawing LEP lights, I do not really see why that would happen. A LEP light has not remotely the intensity of a 10 dollar laser pointer, it is just a very throwy flashlight, useful and maybe annoying but not dangerous at any distance (the kcd, intensity calculated back to 1 meter, is 10+ times the sun, but when actually measured at 1 meter it is much lower because the beam is not collimated yet). And the laser inside is shielded wel from getting out just like similar lasers in engraving machines.
Mine arrived today, waiting for darkness to arrive so I can take it outside. It looks like it will be a lot of fun and serve no practical purpose.
Pip,how do you like yours? I’m about to buy one,but I’m at odds on the long or short version.
It might be interesting to know that they don’t sell separate short tubes. I contacted them with the idea to have both tubes.
They’re not planning on making/selling spare short tubes either.
Hopefully my L2K will arrive tomorrow !
It’s my first lep flashlight so I didn’t really know what to expect, but it’s a ton of fun to play with at night. It’s completely useless at close range, but for several hundred yards away it’s amazing. There is no spill at all so the throw is much more useful than a light that drowns out your vision with spill. As far as usable distance it’s probably twice as far as my GT90 because the spill on the GT90 makes your eyes adjust so you can’t see as far.
I really wish they had included a clear glass lens to protect the aspheric, I’m sure you would lose a little throw but I would prefer to have it protected. I dread the thought of cleaning it. I printed a cover for it out of TPU so I’ll just keep it covered whenever I’m not using it. I have not been able to find a lens that is the right size, most of the lenses that diameter are 3 mm thick. I’m not sure if it would fit a 3mm lens or not but there isn’t much room and there would be a gap in the bezel.
I bought the short version, it’s slightly shorter than the astrolux ft03, with a slightly smaller head. The 20350 batteries are a little hard to find but I’m going to print an adapter to use 18350 batteries because I have some of those sitting around that I haven’t been using.
Build quality is good. Interface seems a little odd. The light didn’t come with a manual and it seems like it doesn’t always come on in the highest brightness. It may have mode memory, I can’t quite say for sure. A short manual would have been nice.
it shipped DHL and arrived about 2 weeks after I ordered it.
I like it and don’t regret buying it.
By the way, I didn’t see any laser markings anywhere on the light or package. I don’t see any reason it wouldn’t make it through Canadian customs… for those who would want to take that chance. 
I don’t have one yet but I’m thinking unless you have a serious use for this light the short version makes the most sense. How much runtime do you really need with a ‘toy’ like this, esp when regulation is so good. Half drained cells with likely give the same turn on output.
Thanks for the input guys, I went with the 21700 version to get the runtime. I am happy to say there is an option for USA customers that don’t want to wait. Killzone flaslights in Texas is selling them and has limited stock. Not shilling,but I have dealt with them before and they are great.
I hope you are not forgetting the Acebeam W50, with 3970000 Candela and 3985 meters of Throw! 
? what is this comment for?
Just buy a 2 maxtochs and attach them together. 5mcd for 1/4 the price. The w50 is cool but who in the world would pay $2300 for it? And the handle for it is ridiculous, that light doesn’t need active cooling.
Mine arrived today, first measurements at 15 m show 1,47MCd on medium and 2,23 MCd on high.
Its awesome!