Is the full pill too difficult to make or too expensive to sell? I know the M1 had the expensive optics and machining but people seem to like the quad kits dont they?
It is too difficult to make by small quantities. I cant get calibration tool for threads when they are not standart size, so pill should be machined and test fit and then again machined etc. until it fits.
I dont feel M1 or M8 host suitable for 24mm carclo optics when M2 is available. It is smaller, available as bare host, and imo looks great, specially with gitd o-ring. I think M2 kit was 3 times more popular then M1.
So, convoy m2 actually looks like the perfect host for small quad.
Will make them if will get enough requests.
I have a 24mm carclo optics in my M1 that I built a quad XPL-Hi. The optics is a bit on the small side though. Could be possibly 2mm-3mm larger and then It would cover the edge of the home made copper heatsink I made, but it works fine.
Thinking about more M2 kits (does liner ring requires changes or no).
Can anyone else confirm same problems?
Note 1: In my suppose stock thin o-ring was placed between bezel and glass lenses. I recommend to save this in quad mod.
Note 2: More recent version have already had thicker GITD o-ring
Yes
M2 is the situation
Can you put stock o-ring between glass and bezel?
Yes I know. I have already made improved version with bigger o-ring groove and gitd o-ring.
I mean can you fix stock o-ring between glass and bezel? (Is it proper size or no).
No
O-ring is smaller, not thick enough too.
Got it, will check original drawings and make changes.
Can you do a dropin for a c cell mag?
I dont feel Mag sets popular, but I can try to make any parts by custom drawing.
Any ideas how does same o-ring work with reflector?
I’m really curious what this will be. Any hints? 
I will make real photos soon. But Ive already posted teaser from 3d model.
This project is made to have different usage, in this case I have to provide it as compete or almost complete set. Sorry for delays and not so budget price, hope nobody would be dissapointed with this step-up.
I don’t think I’ll be disappointed. It’s actually really good that you are trying step up your game and I’m curious to see the finished project.
Is our current guess that this is an entire replacement head?
Right.