The SureFire M640U Scout Light Pro in black, part number M640U-BK-PRO, is a full-size rifle-mounted LED weapon light running two CR123A lithium cells, supplied with the low-profile Scout Light Pro mount.
No charging, no pack to manage, nothing to remember before you leave the house. Two lithium cells that will sit in a drawer for years and still deliver 1000 lumens.
The body is aerospace aluminium in a Mil-Spec hard anodised finish to MIL-A-8625 Type III Class 2, O-ring sealed and rated IPX7, measuring 5.5 in (13.9 cm) long with a 1.125 in (2.9 cm) bezel and weighing 4.4 oz (124 g) with batteries in it. A click-type tailcap gives momentary and constant-on operation, and the low-profile Scout Light Pro mount takes MIL-STD-1913 and M-LOK hardware, both of which are supplied.
Output is 1000 lumens at 11,300 candela, which reaches about 213 metres and runs for roughly 1.25 hours. That candela-to-lumen ratio tells you what sort of beam it is: broad and even, made for searching and for close work rather than for picking something out at the far end of a field. If throw is what you are after, a Turbo head is the right answer instead. Runtime is the other honest limit — 1.25 hours is a night's intermittent use, not continuous burn.
Why shooters choose the M640U
-
Output — 1000 lumens with 11,300 candela, reaching approximately 213 metres
-
Beam — broad and even, made for searching rather than distance
-
Power — two CR123A lithium cells, approximately 1.25 hours of runtime
-
Switching — click-type tailcap, momentary and constant-on
-
Mount — low-profile Scout Light Pro mount with MIL-STD-1913 and M-LOK hardware included
-
Build — aerospace aluminium, Mil-Spec hard anodised to MIL-A-8625 Type III Class 2, IPX7
-
Size — 5.5 in (13.9 cm) long, 4.4 oz (124 g) with batteries
What the M640U fits
The low-profile mount takes the light onto MIL-STD-1913 Picatinny or M-LOK directly using the hardware in the box, which covers most rifle and carbine handguards. Remote switching is available through SureFire's Scout Light switches, which sit in weapon light accessories. If you want a rechargeable body instead, the M640DF Scout Light Pro is the Dual Fuel model, and the M640DFT Turbo trades flood for throw.
Specifications
| Output |
1000 lumens |
| Peak beam intensity |
11,300 candela |
| Beam distance |
Approximately 213 metres |
| Runtime |
Approximately 1.25 hours |
| Battery |
Two CR123A lithium cells |
| Switching |
Click-type tailcap, momentary and constant-on |
| Mount |
Low-profile Scout Light Pro mount; MIL-STD-1913 and M-LOK hardware included |
| Material |
Aerospace aluminium, Mil-Spec hard anodised MIL-A-8625 Type III Class 2 |
| Length |
5.5 in (13.9 cm) |
| Bezel diameter |
1.125 in (2.9 cm) |
| Weight |
4.4 oz (124 g) with batteries |
| Water resistance |
IPX7 |
| Finish |
Black |
| MPN |
M640U-BK-PRO |
The Scout Light with the fewest moving parts in its supply chain, which is exactly why people keep buying it. Order the M640U 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, M640U Scout Light Pro Tan or browse all SureFire.
