I have a thing for Deep Red also. That bright orange dot in the middle… well just irks me.
So the cheapskate (or stop gap) method.
I grabbed a thrower “UniqueFire UF-V8” (This mod will of course work on lots and lots of other lights) and pulled the stock lens out and put two (yes 2x) standard (used) red 52mm camera filters in it.
Bingo done.
Now I did have to pull the lens out of the filter housings, but that was not hard, some just screw apart.
Another member who builds red/IR lights is “kevind43”. He sells mostly to starlight night vision hunters but also does standard red illumination.
what kind of critters are you hunting and at what ranges with what weapon?
You’ll probably find the red XP-E2 in the Brinyte B158 will work just fine for you. You can focus or defocus as required
I’ve done quite a bit of hunting with red lights of various sorts and built a few, and haven’t bothered with deep red.
It’s more a matter of using just enough light to be able your target to ID and shoot safely, something the “1000 lumen” brigade don’t get about this sort of hunting.
Thanks for more responses. I currently have a light, but it is about 630nm according to the manufacturer, it works well, just looking to go a little deeper red. I’ll be hunting hogs, coons and maybe coyotes out to 100 yards or more if I can get a light that will go that far. Btw Richard had responded to my email, I’m waiting to see if he is interested.
I’ve been interested in red lights too. Does the red light reflect off the critters eyes like standard light does? That makes it easier to pop coons and rabbits that think they’re hiding in the brush.
In my experience, the eyes reflect more with the red light.
Most of the Google images show vision stopping before or at 700. Very few show any light above 700. So the answer seems to be no. But they don’t say IR in the description, so I assume people can see at least half of the light. Anyone with experience?
Beyond my pay grade
I missed this one that was for sale, so I had Brad (18sixfifty) build a more powerful one for my brother, I think it was around 5amps? For Sale. UF-T20 with Phlatlight PT-54 (Red High power emitter) $55 (sold)
100 yards is easily done with the bigger lights like the larger of the Brinyte lights like the S18 and S28, the B158 will do it easily on full focus.
The Solarforce M3 also works fairly well with a red XP-E and the green version throws really well - I have and M3 for which I’ve built switcheroo pills. 
http://www.customlites.com/Solarforce-M3-with-Red-or-Green-XPE2-SOL-M3-COLOR.htm
Rabbit eyes pop much better with red light than white or green. Fox eyes light up well with red light also. Green makes fox eyes light right up really bright, and green is more visible to us, and the green XP-E’s commonly used in these lights will out throw the red ones by a good way.
I ordered a T20 host, red xp-e2, and a qlite driver that’ll be maxed out at 1.9a…we’ll see how that build goes.
I’d be interested in a triple star with red emitters. Can’t find any right now though.
There are several sources for triple stars with red emitters around.
I recall this one: SinkPAD 20mm Tri-Star LEDs
Oh, and “it’s a poor memory that only works backwards” — The White Queen
For everything else, we ’oogle. This will find more mentions of “triple red” here.
This is what you get by typing those 2 words in quotation marks into the Search box:
Aluminum stars. For almost double copper is the way to go (Sinkpad II or Noctigon) max fot red is about 1900/2000ma.
Colour perception in our brain is generated by the ratio of the excitations picked up by the three types of colour cones, it is actually a brilliant data-analysis of a very primitive three-receptor system (would you design the sensitivities of the green and red receptor so close to each other?). As you can see in the graph below, above ~670nm nothing is picked up anymore by the green receptor, just the red receptor 'sees' something. However smart it is, above 670nm your brain can not use the ratio between different receptors anymore to distinguish the colour, it gets just information from one receptor, so all light above roughly 670nm will appear the same colour (deep red). Going to higher wavelengths than that, the red receptor just becomes less sensitive and the light will appear dimmer, but not a different colour.
(there may be some variation among the population of humans, but this is roughly the story)
Been building PT54s for four years some up to 12A aspheric. Built GREEN PT121 aspheric at 25A+.
Told you it was beyond my pay grade…hehe…in all seriousness, this is brilliant stuff. Never heard it explained like this. Would like to have a long conversation about this, and how it could relate to hunting.