A weapon light is essential kit for low-light target identification — you cannot shoot at what you have not positively identified, which in Britain is a legal obligation as much as a safety one. But lumens, candela and mounting options can be confusing. Here's how to choose the best weapon light in 2026, with UK-stocked picks for rifle, shotgun and pistol.
Lumens vs candela: what matters
Two numbers describe a light's output. Lumens measure total light output (how much it floods an area), while candela measure peak beam intensity (how far the beam throws). For close work in a barn or yard, 300–600 lumens is plenty; for lamping across a field, high-candela “turbo” models throw a tight, far-reaching beam. The best lights balance both. See how candela translates to real throw distance in our lumens vs candela chart.
Rifle weapon lights
Rifle (long-gun) lights mount to a rail and are usually run with a pressure or tape switch for instant activation. Look for high output, a rugged body and a reliable switch. Leading options come from SureFire (Scout Light series), Streamlight (TLR / ProTac) and Cloud Defensive (REIN). Browse all weapon lights. If the rifle is a foxing rifle, our guide to optics for fox and night vermin control covers lamping properly.
Pistol weapon lights
Pistol lights mount to the accessory rail under the frame and need to be compact and secure. SureFire's X-series and Streamlight's TLR series are the benchmarks, with models sized for full-size and compact frames — in Britain these most often go on long-barrelled pistols, pistol-calibre carbines and airsoft replicas. Many include a green or red aiming laser too. Confused by TLR-1 vs TLR-7 vs TLR-8? Our Streamlight TLR comparison guide decodes the whole range.
How many lumens do you need?
- Barns, yards and close work: 300–600 lumens is ideal — enough to identify your target at close range without blinding backsplash off walls.
- General-purpose rifle: 600–1000 lumens with good candela for indoor-to-outdoor flexibility.
- Lamping and open ground: high-candela “turbo” lights that throw a focused beam far downrange.
Dual-fuel and rechargeable
Many modern lights are “dual fuel” — running a rechargeable cell day to day with CR123A primaries as a long-shelf-life backup. It's the best of both worlds for reliability.
Our top picks at a glance
- Best rifle light: SureFire Scout Light Pro or Cloud Defensive REIN.
- Best compact light: SureFire X300 or Streamlight TLR-7 / TLR-1.
- Best value: Streamlight TLR and ProTac series.
- Best high-candela thrower: SureFire Turbo models.
Shop everything in weapon lights and the wider tactical lighting range, or grab an everyday-carry torch from handheld torches. Working to a budget? See best weapon lights under £250, and for the brand question read SureFire vs Streamlight.
Frequently asked questions
How many lumens do I need for close work?
300–600 lumens is the sweet spot at close range — bright enough to identify your target without blinding backsplash off walls or a barn's interior.
Lumens or candela — which is more important?
Both matter: lumens for flood, candela for throw. Close work favours balanced output; lamping and distance work favour high candela.
Do I need a pressure switch?
On a rifle, a tape or pressure switch allows instant, intuitive activation without changing your grip — highly recommended.