http://www.opticsplanet.com/surefire-replacement-rear-cap-without-tape-switch.html?_iv_code=FS-ZA-RPLCRCAP-194476

I have the 3 cell cr123a surefire fury will this tailcap fit it? I need to run a pressure switch and there is no room for the xm tailcap

Well from the research I've done it looks like I'm looking for a um00 tailcap and surefire basically said good luck

Didn't see the post above stating you did the research, I gotta get my eyes checked again.
Just don't buy any of the budget tail caps, thinking they would be a viable replacement, for a Surefire......unless you have good Bubba skills.

An XM07 tailcap will fit your fury.  I've got a Fury mounted with the XM07, you get both the pressure switch and a push button tailcap with the XM07, but its so big around that it makes it really difficult to find a mount, and you're basically SOL if you want it low profile.  I know the Larue mount works, and I have mine in a VTAC.

Op already said he don't have room for the XM.  Good luck, looking for a UM00, it's gonna be hard to find one of those. I would post something on the EE requesting one, someone may have one laying around.

I know it's not ideal, but this tape switch will work.

http://www.primaryarms.com/sbts/p/sbts/

I have absolutely no clue how it will hold up, but I trust PA's offerings more then any of the other Chinese junk available.

I also sent Elzetta an e mail asking if their tape switches will work with SF Millennium series lights...If they do, that would probably be your best bet...Elzetta offerings are pretty nice... the tail-cap with remote costs $80...but it's also not Chinese junk.

I have modified 4 different Solarforce PTS-3 tail-caps that work on your SF. I had to re enforce many key areas, but they all seem very reliable, and durable.If your up to something like that, I can either walk you through it...or could possibly be persuaded to do it myself.
Here is one of mine.

I'd love to know what you had to do....I have a lead on a um but it's $100 and that is like half of what the damn flashlight cost me

I have a st07 dual wire switch on order so I gotta make this setup work somehow

Well, first on the inside of the Solarforce switch, there is a remote wire that runs threw a hole to the inside of the coupling, from the switch...I packed the hole, until full with jb weld, to isolate the wire, and the inside of the female end of the coupling. (I use jb weld on this part, because when you first mix it up, it is pretty runny, and even though there is steel in jb weld, it does not conduct electricity)
Then I cut the coupling off the SR tape, left most the wire on the SR.... Cut the coupling off a Solarforce tape switch, only left about 3/4 inch to an inch of wire on the coupling...spliced, soldered, and heat shrunk the 2 wires together as close to the Solarforce coupling as I could get. Then I took this epoxy called plastic welder (much thicker then jb weld, and easier to shape, yet strong as hell when dry) and covered the coupling, to 3/8 inch past the wires soldered and heat shrunk together....then let it dry over night.
Next, I shaped the new stronger coupling with my dremil, then covered with black heat shrink tubes.

That's all there is to it, not really hard, Mine have been going strong for years now. I did do a drop test on the modified tape, and it passed with flying colors....I also did a drop test... on an un modified solarforce PTS-3....it broke instantly.(ok not really a test, my AR was standing up in the kitchen, barrel propped on the counter, it slid and hit the floor)

If you have the lead on the UM, I would drop the $$ and get it....who knows when you'll have another chance. I'm just a tight wad, I could have bought an XM, and not messed with all the mods...I just really enjoy making stuff work.

Ordered the um......if surefire is still selling the fury they should keep selling the different tailcap a for it imo

Yeah, but SF does what it does. You would think that they would not discontinue a useful compact product, like the UM...especially with how low profile everything is getting nowadays.
I personally would have used the Solarforce tape on mine...but it was way too touchy, and cheaply made to rely on, the Surefire tape is much different. You have to really push it to activate the light, no accidental activation here, with the solarforce...you touch it, and it comes on...I didn't like that at all. I used a Steamlight tape on my other light build, and it's more similar to the Solarforce then I would like, it is very touchy. I may order another Surefire tape, and re do that one...but then again for the price of an SR tape, I may as well just buy an XM07, and be done with it.