The Streamlight ProTac Rail Mount 1L-X Weapon Light is a compact multi-fuel weapon light purpose-built for short-barreled rifles, carbines and submachine guns. On an SL-B9 rechargeable pack it produces 850 lumens and 30,000 candela (346m); on the included CR123A it runs 500 lumens / 18,000 candela for 1.75 hours, with a 100-lumen low either way.
This version (89026) uses a simple push-button tail switch — no pressure pad — with TEN-TAP programming and both Picatinny and M-LOK mounting. 6000-series black anodised aluminium, glass lens, IP67. 4.64in.
How It Compares
Want the SL-B9 pack included? The 1L-X USB (89027). Need a remote pressure switch? The 1L-X USB Pro (89025). Full-size body? The ProTac Rail Mount HL-X. Browse all weapon lights.
Ideal For
- SBRs, carbines and compact long guns
- Clean tail-switch setups (no pressure pad)
- Multi-fuel flexibility
Key Features
- 850 lm / 30,000 cd / 346 m (SL-B9); 500 lm / 18,000 cd / 268 m (CR123A)
- 100 lm / 3,400 cd / 117 m low (up to 6.5 h); TEN-TAP programmable
- Push-button tail switch
- Picatinny rails plus M-LOK mount included; IP67
- Supplied with a CR123A cell — no USB cord
Technical Specifications
| Output (SL-B9) |
850 lm / 30,000 cd / 346 m (0.5 h); 100 lm / 3,400 cd / 117 m low (4.5 h) |
| Output (CR123A) |
500 lm / 18,000 cd / 268 m (1.75 h); 100 lm / 3,400 cd / 117 m low (6.5 h) |
| Strobe Runtime |
1.25 h (SL-B9) / 2.5 h (CR123A) |
| Battery |
1× SL-B9 or 1× CR123A (CR123A included) |
| Mount |
MIL-STD-1913 Picatinny; M-LOK mount included |
| Length / Weight |
4.64 in (11.79 cm) / 5.12 oz with CR123A (5.22 oz with SL-B9) |
| Construction |
6000-series machined aircraft aluminium, black anodised |
| Durability |
IP67 (1 m, 30 min) with tail switch |
| SKU / MPN / UPC |
89026 / 89026 / 080926890268 |
| Warranty |
Streamlight Limited Lifetime |
What's Included
- ProTac Rail Mount 1L-X weapon light
- Tailcap switch, mounting hardware, M-LOK mount, 1× CR123A lithium battery
UK Delivery & Support
UK-stocked and dispatched tracked from our UK warehouse — no import duties or customs delays — backed by UK-based support and Streamlight's limited lifetime warranty.
Frequently Asked Questions
1L-X or 1L-X Pro?
The 1L-X uses a simple tail switch; the Pro adds the Jack-Cap with remote momentary pressure-switch capability.
What does multi-fuel mean?
Full 850-lumen output on an SL-B9 rechargeable pack, or 500 lumens on the included CR123A. The SL-B9 pack and cord are not supplied with 89026.
What rails does it fit?
Picatinny, plus M-LOK using the supplied mount.
