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Description
A multi-fuel, high-candela long gun light in Black, supplied as the light only with an M-LOK mount, for professionals fitting MIL-STD-1913 or M-LOK rails.
The ProTac Rail Mount HP-X Pro Light Only delivers 800 lumens and 105,000 candela on High, reaching 648 m, with a 55-lumen Low mode for close work.
It is multi-fuel: it runs on two CR123A lithium batteries or one Streamlight SL-B26 protected Li-Ion rechargeable battery pack. This version ships with two CR123A batteries and an M-LOK mount, without the system mounting hardware or remote switch.
The Jack-Cap tail cap switch provides operational switch redundancy, so the light can be operated with either the push-button switch or a remote pressure switch.
Key features
- High-candela beam — 105,000 candela and 800 lumens on High give a beam distance of 648 m.
- Low and strobe modes — Low delivers 55 lumens and 7,600 candela to 174 m, and a strobe mode is available.
- Multi-fuel power — Uses two CR123A lithium batteries or one SL-B26 protected Li-Ion rechargeable battery pack.
- Long run times — On CR123A batteries the light runs 1.5 hrs on High and 18 hrs on Low; on the SL-B26 pack 2 hrs on High and 26 hrs on Low.
- Jack-Cap switch redundancy — The Jack-Cap tail cap switch allows use with either a push-button switch or a remote pressure switch.
- Rail mounting — Securely attaches to long guns with MIL-STD-1913 rails, and the included M-LOK mount covers M-LOK handguards.
- Durable construction — 6000 series machined aircraft aluminium with anodised finish, a gasket-sealed glass lens and 2 m impact resistance tested.
- Waterproof rating — IPX7 rated with the standard push-button switch installed (waterproof to 1 m for 30 minutes) and IPX4 rated with the remote pressure switch installed.
Typical applications
- Long gun illumination for law enforcement and military patrol rifles.
- Long-range target identification where the beam must penetrate smoke, fog or photonic barriers.
- Replacement or additional light head for users who already have the mounting hardware and remote activation.
Technical specifications
| Light output | High: 800 lumens / 105,000 candela / 648 m beam distance / 1.5 hrs (CR123A) Low: 55 lumens / 7,600 candela / 174 m beam distance / 18 hrs (CR123A) Strobe: 2.5 hours (CR123A) run time |
| Battery | Multi-fuel: one Streamlight SL-B26 protected Li-Ion rechargeable battery pack or two CR123A lithium batteries |
| Mounting | Securely attaches to long guns with MIL-STD-1913 rails |
| Compatibility | Long guns with MIL-STD-1913 rails (optional M-LOK mount included) |
| Switch | Jack-Cap tail cap switch with operational switch redundancy: push-button switch or remote pressure switch |
| Body | 6000 series machined aircraft aluminium with anodized finish |
| Lens | Gasket-sealed glass lens |
| Ingress protection | IPX7 with standard push-button switch installed (waterproof to 1 m for 30 minutes); IPX4 with remote pressure switch installed (water-resistant) |
| Impact resistance | 2 m impact resistance tested |
| Length | 14.3 cm (5.63 in) |
| Weight | 181 g (6.4 oz) with CR123A batteries; 198 g (7.0 oz) with SL-B26 battery pack |
| Colour | Black |
In the box
- 1 × ProTac Rail Mount HP-X Pro Light Only, black
- M-LOK mount
- 2 × CR123A batteries
Model information
| Brand | Streamlight |
| Model | ProTac Rail Mount HP-X Pro Light Only, Black |
| MPN | 89017 |
| Packaging | Box |





