I just checked and the tail of the C8 does not fit on EE6X…
Thank you chooma!
I think i will use universal pressure switch from BG but it replaces original 16mm switch board.
Convoy S2+ short tube on Sofirn SP32A head and tail (anodized threads upwards and non-anodizing downwards)
&
Sofirn SP32A tube on Convoy S2+ head and tail (works both ways works with the taller threads towards the tail)
Not sure anyone else will find this usefull, but X6 tube can fit in X7 retaining ring threads.
If you feel your Olight SR91 is too long and heavy and/or if you do not like or want to buy a new proprietary battery pack, just screw the head onto the
body of a Thrunite TN31.
.
Well, you have to modify the head a little (reverse the spring and remove the black plastic cap).
The tailcap switch of the TN31 body will not work anymore but the electronic switch of the SR91 head will.
.
Mine is being converted to XP-L HI V3 3C which together with the factory Olight driver (close to 7 Amps!) will provide between 450 - 500Kcd of
beautiful NW light.
.
Much better then the original.
Cheers
Nico
I just posted this in other thread, but realized it should be posted here too. The tubes from first generation MT03's fit the MF01. I haven't tested to see if it works because my MT03 is 4S at the moment. But other than the O-rings not reaching the head, it looks like it would work fine electronically with no to little modification. The MT03 doesn't have a battery carrier (Cells load from the tail). IIRC, the plate on the head side of the tube looks like it would mate up with the MF01 driver without modification.
The head of the Ultrafire WF-502B screws perfectly onto the Revtronic PT20. Clearly the LED is that of the PT20, but the reflector has to be changed with a 26.5X31mm (I did not find it, I made it with a hand-made aluminum cone)
The image below is the original PT20 at a distance of about one meter (white wall)
The image below is the PT20 with head 502B and self-realized reflector, always at a distance of about a meter from the white wall.
In normal use (about after three meters) the various light rings are not noticed; the modification can still be improved and is easily reversible, unscrew the head of the 502B and replace the one of the PT20
They are compatible. Swapped in 2S plates to the MT03 and it works with the MF01. Makes the light much "grabbier" and easy to hold. Shorter too. Unfortunately, the MF01 tube does not fit the MT03 due to the shoulder built into the tube.
The JAXMAN 18350 battery tube is a perfect fit for the Sofirn SP31 and SP32A
The head of Sofirn SF14 fits on the body of the Sofirn SF10 , and the head of SF10 legoes with the SF14 body! FrankenSofirnStein 
Xref: Mateminco X6S, Factory Triple - #22 by DB_Custom
Hst tip tp DBCustom for that.
And scroll down in that review thread for more lego-info.
Streamer wrote here: [Sofirn Lightning Deal] Sofirn SP32AV2.0 only 20.99 on AMZ us - #67 by Streamer
Good Information. Thanks.
Convoy T2 head in Jaxman E3 body (I cannot test the E3 head on the T2 body has I removed the driver from it 
Will try it when I het the driver 
)
pictures at the source post: [Available again! - BLF special edition light] new Sofirn AAA twisty high CRI 5mm LED - #1754 by slowtechstef
hat tip to slowtechstef
I have found that the Convoy S2+ short tube (ordered from Convoy store) does not work with the Sofirn SP32A V2.0. This was a disappointing finding since MascaratumB reported that it worked in post 113 of this thread. However I now realize that was probably the V1 version. I also tried the tail cap from the Convoy S2, as this was reported to work by Streamer in post 122 above, and it does not fit. Again he says SP32 so I am not sure which version but I think V1. So as far as I can tell something is different about the SP32A V2.0 threads. If anyone has the V2.0 version and can find a short tube that works with it I would like to know about it.
Scientist, I am using the tube with the SP32 V2.0! The tube must be reversed, with the non anodized threads towards the tail of the Sofirn light!
Unless there was a new modification of the SP32 host (probable…) the tube will fit and work! I have one configured like that since I showed it in the picture!
Have you tried to use it reversed?
Yes I have tried both ways. The threads start but the tube does not seat deep enough. Perhaps I just have to try another tube.
ughly! just because you can, doesn’t mean you should!
geneticists take note!
Remember, disappointment is to be expected when trying to “lego” parts — all you can do is report your own observations, but we know from experience that Chinese lights don’t have reliably consistent threading.