Well gosh robo, why didn’t you go ahead and use the TC20 in this comparison? 
Yes, knurling class is what I was referring too. I too have the A3 (from robo) and while the knurling is good on it it’s not to the level of the DQG Tiny nor is the anodizing Type III in my opinion.
TC20 was in the bedroom and I didn’t want to wake the wife in the wee hours when I took the picture this morning.
Just for you though upon your request , here is the TC20 (Left) and the A3S………….
Thanks, technically they’re fairly similar but the Thrunite does have a larger pattern that comes across as more aggressive. I like the way it reflects light, shows that it has more surface area to the diamonds and will be grippier.
I just received my TC20 that I bought from Thrunite directly but it surprisingly came in an Amazon Prime box!
The light is bigger than I thought especially because I had a DN70 and currently own a DQG Tiny III 7xXPG2. The TC20 is bright but the hotspot is tighter than I like and I don’t like the green around the hotspot and bluish hint in the large spill. Beam and tint wise, I much prefer the Haikelite SC02 MTG2 5000k and DQG Tiny III NW (I estimate 3800k to 4000k) with more creamy tint and larger hotspots. I just can’t stand yellow or green tint.
Is your light NW or CW?
Thanks Dale, and thanks Robo for the close up photos. I just received my A3s today and yeah although the knurling is much better than most, it’s definitely not in the same class as Thrunite’s. But I’m real happy with it.
Neutral White.
Even the 70.2 neutral is not even close to as nice as the MT-G2.
I agree even my tc20 cool white have hint of green at low output… i am not worried much… this light is great for me. I know i am getting a good quality light from thrunite.
Just got my NW in the mail today. It’s tiny, and I love it. I can’t wait to take it outside! I’m colour blind so don’t ask me about my thoughts on tint etc lol
beam0, I put a de-domed XM-L2 U4 in my A3 with an FET with ramping firmware, makes it a pretty wicked little zoomie! 
I don’t notice all these rainbow issues using the light outdoors, only if I shine it against a white wall. But even then it’s not enough to concern me, it has a nice neutral tint.
But I read an interesting comment about a XHP70.2 in a different thread today:
“the XHP70.2 4000k 80+CRI, which has perfect neutral tint that is nearly indistinguishable from the legendary Nichia NVSL219BT”
Anyone know where to get this “perfect neutral” emitter?
How does it handle heat on 3800lm Turbo?
I ordered one from the thrunite website… there is a warning that it is not expected to ship until 04/15/2018… is that kind of delay what others have experienced?
I haven’t had a chance to test it’s heat handling but I’m sure other reviews out there mention it.
Mine shipped March 3rd and arrived March 7th 
They ended up shipping it from their amazon Canada store. Very impressed.
My TC20 gets warm not super hot after step-down from turbo mode in ambient temperature about 53F
Here is Temp. /Runtime chart from ZeroAir Reviews.
I am a flashlight newbie.I ordered the Thrunite TC 20 via Thrunite with the 20% discount on Feb 22 and recieved Feb 25.
The light is small and very bright. I had it on Turbo for 7 minutes without overheating.
I didnt notice a great difference between the high 1800L and the Turbo 3800L will a different battery give more output?
What batteries 26650 work with this flashligh? I sent an email to Thrunite for a pocket clip but non available, anyone know where I can get a pocket clip for this light ?
Any recomendations for a better holster ? The Olight R50’s holster looks like its better quality and more heavy duty any other recomendations ? Thank you
The TC20 also works with the current best unprotected cell, Shockli 5500mah (measured at 5,948mah), and best protected cell, Xtar 5000mah (measured at 5,224mah). In comparison the included Thrunite 5000mah protected battery measured at 5,335mah. I think the Thrunite and the Xtar are the same batteries.
I tested the TC20 NW with the Thrunite 5000mah, Xtar 5000mah Protected, and Shockli 5500mah batteries and they all gave the exact same lux readings so you won’t gain any output by using another battery.