I’m very sorry, because we need to use a standardized mold, all the threads have to be changed. The molds used before are all hand-polished.
Before that, I also realized that there would be many problems,
It’s great that Simon continues to take responsibility for any Convoy mishaps that come along! He’s an honest and reputable seller. 
Thanks for the info Simon.
So basically this change of threads specification is due to new production/manufacturing process which is more efficient, and not caused by some random mistakes in the machining department?
If that’s the case here, then I’m personally OK with that, as long as each flashlight is fit properly and works well, and this change is as planned and designed, therefore it is consistent for current and future batches . More efficient production process is good.
Please can you measure new thread size diameter and pass of body tube?
Any buyer who has purchased 18350 tube and S2+ remote switch, and there is a mismatch, can ask me to apply for a refund.
Simon. Do you still have old stock of original thread? What colours?
red blue green S2+ ,old thread
But they will be changed in the future.
Thank you for answering.
So all other colours are the new thread.
LoL! And just half a day ago or so a friend of mine was asking me about a 18350 tube for some Convoy S2. :???:
My guess is I'd need to take some careful inspection to them, I think his (2x?) S2s were built with hosts from FastTech long ago.
Standardization is a boon, let me say.
Let us know. OR make a note in the description.
Dang. I was looking forward to putting my brass 18350 tube on the new s2+ with sst40 emitter. Time to order an old s2+ I guess.
Would be nice if Copper S2+ and new Alu S2+ had the same threads.
Copper S2+ Head can match with S2+ body tube?
The old thread is a trapezoidal thread, the new thread is a rectangular thread,
The new copper S2+ uses rectangular threads,
it matches with S2+ body with new thread now
Hi Simon.
Do you still have 18350 tubes in stock of the old style? I’d be looking to grab some before they are gone. Violet, desert tan, etc.
These are threads of my copper S2+ Ordered on december 2019
Will match with new S2+ Alu parts?
I assume also that the Pills are the same too
Im really suprized to hear that these are cast. They look machined to me. In fact, it’s pretty much impossible to get a quality cnc machined type finish using a mold with aluminum.
Probably are machined. Translation thing.
That’s helpful information it would be good to include “Square threads” in the product description from here on out
Is that the case for all threads both internal (driver retaining ring and tailswitch) and external (head and battery tube and tailcap)?
Square threads are generally a good thing and worth advertising, as well as being helpful to distinguish for us longtime customers who have the older type.
I just wonder. When all the threads will be standardized, will it be possible lego M1 head + S2+ 18350 tube + C8 tailcap?