Have you considered selling body tubes with various knurling patterns? I’m sure some people would be all over that.
Price-wise this is right in line with similar quality semi-custom lights, and this has the advantage of a host you engineered vs off-the-shelf from PFlexPro or a similar builder.
I got this flag at Goodwill and it was brand new sealed! I was so excited to see that its made in USA! I have another flag but the stars are not embroiled like this one is and is not made in USA either. From now on I will save this flag as background for USA made lights 
May be I will get a high quality embroiled Chinese flag to use as background on the most premium true Chinese branded lights …hmmm…
Are these bad ideas? ahhaah
Yes I got tons of plans. Even plan to use LilVortex custom copper shell to work with a large reflector thrower head. But first I have to recoup the funds first. Kinda broke right now. Even debating selling the Stingray ahhaha
Original twisty design:
New Design:
There is a delay for batch 2 and some lights from batch 1 at the anodization shop. I will update as soon as I have better ETA.
In the meantime here is the most updated Twisty Tail Cap
Massive 3X15mm Trits slots on the side
Leave empty for maximum twist grip
Fill every other slot with Trits to retain grip while adding extra night visibility
Fill every slots with Trits for maximum shine
Raised side wall diameter is slightly larger than body for trits accommodation without loosing rigidity
Side wall increased diameter also adds extra torque for twist operation
Side wall increase diameter also make head from tail identification easily in the dark
Added groove with screws tapped
Ti pocket clip can be installed
Hole on pocket clip can serve as lanyard attachment point if needed
If you dive or climb and need a more robust carabiner attachment point there will be an accessories that screwed to the same groove.
If all the side trits are filled then the pocketclip will be your biggest grip point for twist operation.
Rear 2X12mm Trits slots surround SL engraved Logo if possible. Under logo it should say “USA”. Not sure if we can engrave with such detail.
All sharp edges will be rounded off for comfort
3 Rear 2X12mm Trits = $13.50*3 = $40.50
11 Side 3X15mm Trits = $12*11= $132
$172.50 in Trits parts alone!!! hahahahahhahahah
I imagine most will just leave the slots empty
But can you imagine how cool the tail cap would be if fully populated with these HUGE trits?
That is beautiful Vinh. :+1: I don;t know why, but it reminds me of a classic Polarion HID from a few years back, but this looks awesome.
Following
All the info on the light here: https://skylumen.com/collections/v54-lights/products/sky-lumen-nguyen-bulletproof-r-2
You do all the nice finishes that we ask for but the chinese manufacturers fail to produce 
(but a pity that the nice dark blue MCPCB that you showed as prototype did not make it, it would make the light look sooo much better at the expense of maybe only 2% ? output)
You can order Blue or White.
Nice, in that case could you at some point measure an (ballpark) actual output difference? I’d be curious about that.
All P60vn Mules will benefit from LilV custom extra copper hardware.
Quad Mules are much cheaper than LilV and with LEDs near the center there are less output lost. Heat should be much less too. 
Quality stuff
P60vn 650.2
Max 11500 LED Lumen
Max 8600L in SLN Twisty Proto Shown
Crazy Bright but of course has hint of purple
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