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Description
The Streamlight ProTac Rail Mount 1L-X Pro is a black multi-fuel rail-mounted tactical light with a Jack-Cap tailcap for push-button or remote pressure switch operation.
This multi-fuel light runs on one Streamlight SL-B9 lithium-ion rechargeable battery pack or one CR123A lithium battery. On the SL-B9 it delivers 850 lumens on high; on a CR123A it delivers 500 lumens on high, with a 100-lumen low mode on either battery.
The Pro model uses a Jack-Cap tailcap switch that offers operational switch redundancy: push-button operation or remote pressure switch operation. The light is TEN-TAP programmable, and MIL-STD-1913 Picatinny rail and M-LOK mounts are included.
This version is supplied with the Jack Cap, an M-LOK kit, a momentary switch, a hardware kit, a 2.5 mm Allen wrench and one CR123A lithium battery.
Key features
- Two-battery flexibility — Runs on one SL-B9 rechargeable battery pack or one CR123A lithium battery.
- High beam reach — High mode reaches 30,000 candela and 346 m on the SL-B9, or 18,000 candela and 268 m on a CR123A.
- Run times — High runs for 30 mins on the SL-B9 and 1.75 hrs on a CR123A; the 100-lumen low mode runs for 4.5 hrs on the SL-B9 and 6.5 hrs on a CR123A.
- Strobe function — Strobe runs for 1.25 hours on the SL-B9 and 2.5 hours on a CR123A.
- Jack-Cap switch redundancy — The Jack-Cap tailcap switch allows push-button operation or remote pressure switch operation, and the momentary switch is included.
- TEN-TAP programmable — The light is TEN-TAP programmable.
- Picatinny and M-LOK — MIL-STD-1913 Picatinny rail and M-LOK mounts are included, with a hardware kit and 2.5 mm Allen wrench in the box.
- Sealed aluminium body — The 6000 series machined aircraft aluminium body with anodised finish and gasket-sealed glass lens is IP67-rated with the push-button switch installed (waterproof to 1m for 30 minutes) and IP54-rated with the remote pressure switch installed.
Typical applications
- Weapon-mounted illumination on short-barrelled rifles and carbines for law enforcement and security teams
- Submachine gun and carbine setups where remote pressure-pad activation is preferred
- Teams that want flexibility in the power source they carry
Technical specifications
| Light output | SL-B9 High: 850 lumens / 30,000 candela / 346 m beam distance / 30 mins SL-B9 Low: 100 lumens / 3,400 candela / 117 m beam distance / 4.5 hrs CR123A High: 500 lumens / 18,000 candela / 268 m beam distance / 1.75 hrs CR123A Low: 100 lumens / 3,400 candela / 117 m beam distance / 6.5 hrs Strobe SL-B9: 1.25 hours run time Strobe CR123A: 2.5 hours run time |
| Battery | One Streamlight SL-B9 lithium-ion rechargeable battery pack |
| Mounting | MIL-STD-1913 Picatinny rail and M-LOK mounts included |
| Switch | Jack-Cap tailcap switch offering operational switch redundancy 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 installed (waterproof to 1m for 30 minutes); IP54 with remote pressure switch installed (water-resistant) |
| Length | 11.79 cm (4.64 in) |
| Weight | 155.9 g (5.5 oz) with CR123A; 158.8 g (5.6 oz) with SL-B9 |
| Colour | Black |
In the box
- 1 × ProTac Rail Mount 1L-X Pro, black
- Jack Cap
- M-LOK Kit
- Momentary Switch
- Hardware Kit
- 2.5 mm Allen Wrench
- 1 × CR123A lithium battery
Model information
| Brand | Streamlight |
| Model | ProTac Rail Mount 1L-X Pro, Black |
| MPN | 89024 |







