The SureFire M640U Scout Light Pro is a 1000-lumen rifle weapon light built to SureFire's legendary hard-use standard. It throws a balanced 11,300-candela beam — enough flood for room-to-room work and enough reach for positive ID out to roughly 200m — from a rugged aerospace-aluminium body.
The Scout Light Pro's low-profile mount is M-LOK and Picatinny compatible, and it slots straight into the Scout Light ecosystem — add a SureFire tape or dual switch for instant activation.
Finish: Black — also available in Tan.
How It Compares
Want more output? The M640DF Scout Light Pro steps up to 1500 lumens, and the Turbo models add long-throw high candela; for a compact option see the M340C Mini Scout Light. Browse all weapon lights, the wider SureFire range, and remote switches in tactical lighting. New to weapon lights? Read our best weapon lights guide.
Ideal For
- Full-size rifle platforms
- Tactical and duty use
- Home defence setups
- Law enforcement and professional use
Key Features
- 1000-lumen high-output LED
- Balanced beam — 11,300 candela, ~213m throw
- Scout Light Pro low-profile mount (M-LOK / Picatinny)
- Aerospace aluminium body, O-ring sealed (IPX7)
- Part of the Scout Light switch ecosystem (switches sold separately)
Technical Specifications
| Output |
1000 lumens |
| Peak Beam Intensity |
11,300 candela |
| Beam Distance |
~213 m |
| Battery |
2 x CR123A lithium |
| Runtime |
~1.25 hours |
| Material |
Aerospace aluminium |
| Finish |
Black |
| Mount |
M-LOK / Picatinny compatible |
| Length |
~5.6 in |
| Weight |
~5.5 oz |
| Water Resistance |
IPX7 |
| MPN / UPC |
M640U-BK-PRO / 084871329286 |
What's Included
- M640U Scout Light Pro weapon light
- Low-profile mount (M-LOK / Picatinny)
- 2 x CR123A batteries
- Mounting hardware
- User manual
UK Delivery & Support
UK-stocked and dispatched tracked from our UK warehouse — no import duties or customs delays — backed by UK-based support and SureFire's warranty.
Frequently Asked Questions
Lumens or candela — what matters?
Lumens (1000) measure total output; candela (11,300) measure beam intensity/throw. The M640U balances both for indoor flood and ~200m reach.
Do I need a separate switch?
The M640U works with its tailcap; for a rail-mounted tape or dual remote switch, add one from the Scout Light range.
What rifles does it fit?
The included low-profile mount fits M-LOK and Picatinny rails.
What batteries does it use?
Two CR123A lithium cells, for around 1.25 hours at full output.
