Streamlight ProTac Rail Mount 1L-X Weapon Light 850 Lumens
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The Streamlight ProTac Rail Mount 1L-X, part number 89026, is a compact multi-fuel long gun light 4.64 in (11.79 cm) long, supplied with a tail switch, mounting hardware, an M-LOK mount and one CR123A lithium cell.
Read the part number before the headline. 89026 is the tail-switch package with a CR123A in the box, which means 500 lumens as delivered and 850 only once you buy the rechargeable pack.
The body is 6000-series machined aircraft aluminium, black anodised, rated IP67 for one metre and thirty minutes with the tail switch fitted. On an SL-B9 rechargeable pack it produces 850 lumens and 30,000 candela for a 346 m beam over half an hour; on a CR123A lithium cell it gives 500 lumens and 18,000 candela for 268 m over 1.75 hours. Low is 100 lumens and 3,400 candela for 117 m, running 4.5 hours on the pack or 6.5 hours on the cell, and strobe runs 1.25 hours or 2.5 hours respectively. It weighs 5.12 oz with the CR123A and 5.22 oz with the SL-B9.
A short body suits a short handguard, which is where this light earns its place — a full-size head hanging off a carbine forend is dead weight for a beam you rarely need at that intensity. TEN-TAP lets you set the order the modes appear in. This version takes a push-button tail switch only and will not accept a remote pressure pad, so if you want a pad on the handguard you want a different part number. Picatinny mounting is direct, and Streamlight supplies an M-LOK mount in the box for M-LOK handguards.
It clamps to MIL-STD-1913 Picatinny rail on a rifle, carbine or shotgun, and the included M-LOK mount covers M-LOK handguards without an adapter. For the same light supplied with the SL-B9 pack and cord so it runs at full output out of the box, see the ProTac Rail Mount 1L-X USB; for remote pressure-switch capability, the 1L-X USB Pro adds the Jack-Cap. Our M-LOK versus Picatinny guide covers the mounting choice.
| Output (SL-B9) | 850 lumens / 30,000 candela / 346 m, 0.5 h |
|---|---|
| Output (CR123A) | 500 lumens / 18,000 candela / 268 m, 1.75 h |
| Low | 100 lumens / 3,400 candela / 117 m, 4.5 h on SL-B9 or 6.5 h on CR123A |
| Strobe runtime | 1.25 h on SL-B9, 2.5 h on CR123A |
| Battery | One SL-B9 rechargeable pack or one CR123A lithium cell; CR123A included |
| Switching | Push-button tail switch, TEN-TAP programmable; no remote pressure pad |
| Mount | MIL-STD-1913 Picatinny; M-LOK mount included |
| Length | 4.64 in (11.79 cm) |
| Weight | 5.12 oz with CR123A, 5.22 oz with SL-B9 |
| Construction | 6000-series machined aircraft aluminium, black anodised |
| Durability | IP67 (1 metre, 30 minutes) with the tail switch fitted |
| In the box | Light, tailcap switch, mounting hardware, M-LOK mount, one CR123A cell |
| MPN | 89026 |
Short, light and honest about what it does on the cell it comes with — and ready for more if you add the pack. Order the ProTac 1L-X today — imported from the USA with all duties paid by us and dispatched tracked from the UK in 7–10 business days, with nothing to pay on delivery.
Explore more: Weapon Lights, ProTac 1L-X USB or browse all Streamlight.
| Brand | Streamlight |
|---|---|
| Part no. | 89026 |
| Category | Weapon Light |
| Barcode | 080926890268 |
£5 tracked UK delivery on every order via Royal Mail Tracked 24. Our products are ordered in from the manufacturer rather than held in UK stock, so please allow 7 to 10 business days (Monday to Friday, excluding bank holidays) from the date of your order for it to reach you. Tracking details are emailed on dispatch. UK delivery only.
You have 30 days from receiving your order to cancel it for any reason, then 14 days to send it back unused and in its original packaging. Faulty, damaged or incorrect items are replaced or refunded and we cover reasonable return postage. Refunds go back to your original payment method within 14 days of receiving the return.
7 to 10 business days from the date of your order. Every order is sent Royal Mail Tracked for a flat £5 and you receive tracking details by email when it is dispatched.
Yes. We list only genuine parts and optics from the brands shown, ordered in from the manufacturer for your order.
Compatibility notes on this page come from the manufacturer. If you are unsure, email us with your make and model before ordering and we will check rather than guess.
Yes. Bundle & Save applies automatically in your basket: 5% off when you buy 2 items, 10% off at 3 items and 15% off at 4 or more. It works across the whole range, so you can mix and match, and there is no code to enter.
Yes — you have 30 days from delivery to cancel for any reason, as long as the item is unused and in its original packaging. See our returns policy for the details.
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