Can you say something more about the ergonomics and size-weight of the M21A vs the C8(+)?
M21a has a floodier beam due to its smaller reflector
Also remember that all convoy SST40 drivers have thermal management and will never ever give their rated lumen output.
Therefore you have to remove the NTC
if u want a cheap light with sst40 i would recommend the astrolux ft03 for 30$ or something… very good light, but even a c8+ with xpl hi emitter is a cheap choice for a decent thrower, and usually no heat issue since it has less then 1000 lumens but the sst40 has twice the lumens so heats up faster ofc…
Did you get it with 5000K emitter? Curious how the tint is on the batch Simon got.
I got the cw. I like the tint. No yellow, but not on the blue side either.
Also to answer a previous comment, I would say the m21a throws further than the c8. Yes it has more flood than the c8 due to having an additional 1000 lumens. But I would definitely say the m21a throws farther. as far as thermals, I’ve had it on turbo for several minutes without visually noticing a stepdown. It does get noticeably warm however. Unfortunately I let a friend borrow the c8 so I cannot do a direct comparison at the moment, but based off memory I do believe the m21a may not be as wide, I think the reflector may be deeper.
If I recall correctly the ‘ramping’ driver that Simon supplies with the SST40 C8+ does not have thermal management. The ‘4-modes’ driver does though :+1:
I have both the “C8 with Biscotti 7135x8 XPL-HI 6500k” and “C8+ with ramping driver and SST40 6500k” and the perceived difference in light output between the two is substantial. The SST40 throws just as far as the XPL-HI does but offers a wider hotspot and more spill. If you do not care for battery life go with the SST40 version. If you prefer better battery life and tighter beam go with the XPL-HI :+1:
The C8, C8+ and M21A uses the exact same reflectors. I had a Astrolux C8, and still have a Convoy C8+ and 2x Convoy M21A.
EXACTLY the same reflectors. Just keep in mind the M21A has a froward clicky switch.
I’m looking for a 3000k xpl hi to put into a FT03 ,would this be worth it? Anybody knows if exists such a led? Thanks
Yes XPL-HI in 3000K do exist and are available from Simon at his Convoy Aliexpress store;
V2-1A = 6500-7000K
U6-3A = 5000-5200K
U6-4C = 4200-4500K
U3-7A = 3000-3300K
Thanks for replying, would it be a better thrower the FT03 with xpl hi vs sst20 , less heat? Is it worth it to gain more throw?
well 3000k is a weird tint to have in a thrower imo…best is to use a neutral tint instead. but it will be less heat if thats what u after tho.
There’s lots of frog in here,that’s why I’m looking further for a 3000k tint
I’ve found an XM-L2 running at 4 amps gives a really nice amount of light in a C8 and there are stacks of tint options… But if you are thinking about a bit more power you might want to take a look at the M21A & L21A
Both have the Xhp35.2 an SST40 options 
The M21A is really not much bigger than a C8+ but gives you a 5000mah capacity
K ,I like FT03 body, and now I’ve got the sst40 and xhp50 version. I’m thinking that could improve throw ,or at least maintain it with a xpl hi ,where I can choose the tint , in my case 3000k ,which I really need and like. What do I need to switch the led? New driver, 16mm or 20mm, new center ring? Thanks
Or you could slice the dome on the sst40 and increase your throw.
What is an NTC?
[quote=California_Prepper]
I sliced my SST-40 in my FT03 and only gained 80 meters. Won’t be doing that again.
just wondering, how comparable is the battery life between the sst40 vs the xpl hi? I ordered the C8+ SST40 5000K and have some samsung 35E 3500mAh batteries for it. Is the battery life reasonable?
Which driver are you using?
The 4-mode driver. Hopefully that answers your question. I dont know much about flashlights haha. I ordered that option from banggood.