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9/21/2025 2:44:56 PM EDT
I recently purchased a Streamlight HP-X Pro (105K candela model).  No issues with it but I am not a fan of the jack cap as I am not partial to tape switches and the manual activation button is pretty small.  I am looking for a clicky or momentary tailcap.  I tried emailing Streamlight if they offered anything but they just replied with a "no".

Does anyone know if anyone offers any solutions?  I tried googling it but I get stuff ranging from the HLX tailcaps should work to no, the threads are different.  I was toying with the idea of trying the arisaka adapter but between that and an additional clicky tailcap, I'd be in for the same amount of money as as used surefire (probably what I should have gone with in the first place!).
10/10/2025 8:27:18 AM EDT
[#1]
If it uses the same tailcap as the HL-X Pro (and it looks like it does), Streamlight does make a clicky tailcap that will fit the HP-X Pro (though not specifically made for the HP-X Pro).
I know, because I bought a couple when I was using the HL-X Pro. Unfortunately, I sold them over a year ago and don't remember where I purchased them from.
However, IIRC, it was from their Protac Rail Mount HL-X (careful, there are two versions and the smaller one which won't fit is the most commonly advertised). I remember them having a red button instead of the usual black.
HTH...
Eternity is coming for us all. It cannot be denied, debated or avoided.
We would do well to ponder how we're going to spend that eternity, because eternity is a long time to be wrong.
10/15/2025 10:30:08 AM EDT
[#2]
I know I’ve swapped the tail cap from one of my HL-Xs with an HL-X Pro that has their new “jack-cap” tailcap.
I honestly wish you could buy the newer lights without the tape switch/new tail cap as I generally just use the tailcap button.
“The desire for safety stands against every great and noble enterprise.” Tacitus
10/15/2025 11:24:31 AM EDT
[#3]
Originally Posted By platonicsolid:
I recently purchased a Streamlight HP-X Pro (105K candela model).  No issues with it but I am not a fan of the jack cap as I am not partial to tape switches and the manual activation button is pretty small.  I am looking for a clicky or momentary tailcap.  I tried emailing Streamlight if they offered anything but they just replied with a "no".

Does anyone know if anyone offers any solutions?  I tried googling it but I get stuff ranging from the HLX tailcaps should work to no, the threads are different.  I was toying with the idea of trying the arisaka adapter but between that and an additional clicky tailcap, I'd be in for the same amount of money as as used surefire (probably what I should have gone with in the first place!).
View Quote


Just spoke to SL CS and they took a while to look into it before calling me back with confirmation that they don’t sell the HL-x legacy tailcap by itself, and didn’t know why that decision was made, just that it was made fairly high up and no one he spoke to could tell him what the reasoning was.
I would hope that if enough people express interest in it that they would change that decision.
“The desire for safety stands against every great and noble enterprise.” Tacitus
10/15/2025 11:39:09 PM EDT
[#4]
Quote History
Originally Posted By keeperofthedew:


Just spoke to SL CS and they took a while to look into it before calling me back with confirmation that they don’t sell the HL-x legacy tailcap by itself, and didn’t know why that decision was made, just that it was made fairly high up and no one he spoke to could tell him what the reasoning was.
I would hope that if enough people express interest in it that they would change that decision.
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That's really shortsighted by whoever made that decision.
11/10/2025 9:40:50 AM EDT
[#5]
Quote History
Originally Posted By HobbitHunter:

That's really shortsighted by whoever made that decision.
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Maybe the old version has issues?
11/10/2025 9:36:30 PM EDT
[#6]
Quote History
Originally Posted By tet493:
Maybe the old version has issues?
View Quote

I don't see how, it's the one tailcap that gets no complaints. All i use are clicky tailcaps, non of my streamlights (weapon or handheld) have issues.

I'm guessing they are just cutting costs.
11/11/2025 8:46:43 AM EDT
[#7]
This place has streamlight parts that no one else does if SL wont directly sell you what you're looking for. I've bought a bunch of microstream 2 way pocket clips from them for other lights and they are gtg


https://www.flashlightdealer.com/default.aspx
"I've always felt that the real horror is next door to us, that the scariest monsters are our neighbors."
-George A. Romero
1/30/2026 1:07:31 PM EDT
[#8]
Revisiting this
Has anyone found a clicky ONLY tailcap?
2/5/2026 2:31:16 PM EDT
[Last Edit: HobbitHunter][Edited] [#9]
This MIGHT be it or at least compatible?

https://www.flashlightdealer.com/mobile/tailcap-assembly--protac-hl-x-details.aspx
2/7/2026 11:07:17 PM EDT
[#10]
Quote History
Originally Posted By HobbitHunter:
This MIGHT be it or at least compatible?

https://www.flashlightdealer.com/mobile/tailcap-assembly--protac-hl-x-details.aspx
View Quote


I actually purchased that same tailcap from the same seller.  Super fast shipping.  I can recommend them without issue.

Unfortunately, the tailcap didn't work.  It seemed a little small.  It wouldn't screw onto the body.

2/9/2026 6:26:38 PM EDT
[#11]
That is what I expected, it being too small.
Thanks guys

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