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Description
A compact multi-fuel tactical light for short-barreled rifles, carbines and submachine guns, supplied with an SL-B9 battery pack, USB cord and Jack Cap.
The ProTac Rail Mount 1L-X USB Pro runs on one Streamlight SL-B9 lithium-ion rechargeable battery pack and also accepts one CR123A lithium battery. On the SL-B9 it delivers 850 lumens and 30,000 candela on high, with a distance of 346 m.
The Jack-Cap tailcap switch offers push-button operation or remote pressure switch operation, and both MIL-STD-1913 Picatinny rail and M-LOK mounts are included.
It is supplied in black with a Jack Cap, M-LOK Kit, Momentary Switch, Hardware Kit, 2.5 mm Allen Wrench, one SL-B9 battery pack and a USB cord.
Key features
- Multi-fuel power — Uses one SL-B9 lithium-ion rechargeable battery pack or one CR123A lithium battery.
- High and low output — 850 lumens high and 100 lumens low on the SL-B9, or 500 lumens high and 100 lumens low on a CR123A.
- Run time — Runs 30 mins on high and 4.5 hrs on low with the SL-B9, or 1.75 hrs on high and 6.5 hrs on low with a CR123A.
- Switch redundancy — The Jack-Cap tailcap switch allows push-button operation or remote pressure switch operation.
- Picatinny and M-LOK — MIL-STD-1913 Picatinny rail and M-LOK mounts are included.
- Sealed aluminium body — 6000 series machined aircraft aluminium with anodised finish and a gasket-sealed glass lens.
- IP67 rated — IP67 with the standard push-button switch (waterproof to 1 m for 30 minutes) and IP54 with the remote pressure switch (water-resistant).
- Compact dimensions — Measures 11.79 cm (4.64 in) long and weighs 158.8 g (5.6 oz) with the SL-B9.
Typical applications
- Weapon-mounted illumination for carbines and short-barreled rifles
- Tactical light for submachine guns in low-light environments
- Duty and training use on short-barreled weapons
Technical specifications
| Light output, SL-B9 High | 850 lumens / 30,000 candela / 346 m beam distance / 30 mins |
| Light output, SL-B9 Low | 100 lumens / 3,400 candela / 117 m beam distance / 4.5 hrs |
| Light output, CR123A High | 500 lumens / 18,000 candela / 268 m beam distance / 1.75 hrs |
| Light output, CR123A Low | 100 lumens / 3,400 candela / 117 m beam distance / 6.5 hrs |
| Light output, Strobe | 1.25 hours (SL-B9); 2.5 hours (CR123A) run time |
| Battery | One Streamlight SL-B9 lithium-ion rechargeable battery pack |
| Mounting | MIL-STD-1913 Picatinny rail and M-LOK mounts included |
| Compatibility | Short-barreled rifles, carbines and submachine guns |
| Switch | Jack-Cap tailcap switch with push-button operation or remote pressure switch operation |
| Body | 6000 series machined aircraft aluminium with anodised finish |
| Lens | Gasket-sealed glass lens |
| Ingress protection | IP67 with standard push-button switch (waterproof to 1 m for 30 minutes); IP54 with remote pressure switch (water-resistant) |
| Length | 11.79 cm (4.64 in) |
| Weight | 158.8 g (5.6 oz) with SL-B9; 155.9 g (5.5 oz) with CR123A |
| Colour | Black |
In the box
- 1 × ProTac Rail Mount 1L-X USB Pro, black
- Jack Cap
- M-LOK Kit
- Momentary Switch
- Hardware Kit
- 2.5 mm Allen Wrench
- 1 × SL-B9 battery pack
- USB cord
Model information
| Brand | Streamlight |
| Model | ProTac Rail Mount 1L-X USB Pro, Black |
| MPN | 89025 |







