Description
The Streamlight ProTac Rail Mount HP-X Pro is built for reach. At 800 lumens with 105,000 candela behind it, this light pushes a tight, focused beam out to 648 meters, which means you can identify what is downrange long before it gets close. That kind of throw is the whole point of the HP-X Pro, and it earns its spot on a rifle or carbine where distance matters more than a wide flood of light.
What Sets the HP-X Pro Apart
The standout here is the Jack-Cap tail cap switch. It gives you built-in redundancy, so you can run the light with the standard push-button or plug in a remote pressure switch without swapping parts. Add TEN-TAP programming and you can set the light up three ways: high/strobe, high only, or low/high, depending on how you like to run it. The low setting drops down to 55 lumens with an 18-hour runtime on CR123As, so you are not stuck burning through batteries when you just need a little light.
Power Your Way With the ProTac RM HP-X Pro
This is a multi-fuel light, which is a big part of the appeal. It runs on two included CR123A lithium batteries or a single Streamlight SL-B26 rechargeable pack if you would rather charge than replace. On high, expect around 1.5 hours from CR123As and 2 hours from the SL-B26. The body is machined from 6000 series aircraft aluminum with an anodized finish, and it carries an IPX7 waterproof rating with the push-button switch installed, so a little weather or a dunk is not going to sideline it.
Mounting the ProTac Rail Mount HP-X Pro
The integrated rail clamp snaps right onto MIL-STD-1913 Picatinny rails, and the included M-LOK mount opens it up to M-LOK compatible handguards. At 5.63 inches long and 6.4 ounces with CR123As, it stays low-profile and light enough that it will not throw off the balance of your setup.
Key Specifications
- Manufacturer: Streamlight
- Model: ProTac Rail Mount HP-X Pro
- Manufacturer Part Number: 89017
- UPC: 080926890176
- Color: Black
- High Output: 800 lumens
- Low Output: 55 lumens
- Peak Beam Intensity: 105,000 candela
- Beam Distance: 648 meters
- Runtime (High): 1.5 hrs CR123A / 2 hrs SL-B26
- Battery: (2) CR123A lithium or (1) Streamlight SL-B26 rechargeable
- Programming: TEN-TAP (three programs)
- Length: 5.63 inches
- Weight: 6.4 oz with CR123A batteries
- Construction: 6000 series machined aircraft aluminum, anodized finish
- Waterproof Rating: IPX7 (without remote pressure switch installed)
What’s Included
- ProTac Rail Mount HP-X Pro light
- Jack-Cap tail cap switch
- M-LOK mount
- Allen wrench
- (2) CR123A lithium batteries
Frequently Asked Questions
What batteries does the ProTac RM HP-X Pro use?
It is a multi-fuel light, so it runs on the two CR123A lithium batteries that come in the box or on a single Streamlight SL-B26 rechargeable battery pack. On high you get about 1.5 hours from the CR123As and roughly 2 hours from the SL-B26. That flexibility lets you charge up at home or swap in disposables when you are away from a charger.
Will the HP-X Pro mount to both Picatinny and M-LOK rails?
Yes. The integrated rail clamp attaches directly to MIL-STD-1913 Picatinny rails, and the included M-LOK mount lets you run it on M-LOK compatible handguards. That covers just about any modern rifle or carbine setup.
What is the Jack-Cap switch on the ProTac Rail Mount HP-X Pro?
The Jack-Cap is the tail cap switch that gives you two ways to run the light. You can use the standard push-button for simple on-off control, or plug in a remote pressure switch for activation without moving your firing hand. Having both options built in means you are not locked into one setup.
How far will the HP-X Pro throw its beam?
With 105,000 candela behind the LED, the beam reaches out to about 648 meters. That focused throw is what this light is built for, making it a strong pick when you need to identify targets or terrain at distance rather than flood a close-up area.





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