The SureFire M640DFT Scout Light Pro Turbo is a full-size rifle-mounted LED weapon light in black, part number M640DFT-BK-PRO.
DFT stands for Dual Fuel Turbo, and the turbo head is the part that matters: it packs the output into a tight hotspot so the beam reaches rather than spreads.
The body is aerospace aluminium sealed to IPX7 for a metre of immersion over 30 minutes, 5.9 in (15 cm) long and 5.5 oz (156 g), with a 1.258 in (3.19 cm) bezel. It ships on a low-profile Scout Light Pro mount that fits M-LOK and Picatinny directly, and it is switched by a click tailcap — the ZE68 momentary and constant-on pushbutton.
On the SF18650 rechargeable cell supplied it produces 700 lumens and 100,000 candela for 632 metres of beam distance, running 2.75 hours. On two CR123A lithium primaries it makes 600 lumens and 90,000 candela for 600 metres over 1.75 hours. Lumens describe how much light comes out; candela describe how tightly it is focused, and candela is what decides how far you can identify something at the far end of a field.
Why shooters choose the M640DFT
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Output on SF18650 — 700 lumens, 100,000 candela and 632 metres for 2.75 hours
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Output on CR123A — 600 lumens, 90,000 candela and 600 metres for 1.75 hours on two cells
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Power — Dual Fuel — one SF18650 rechargeable cell included, or two CR123A primaries
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Switching — ZE68 click tailcap, momentary and constant-on
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Mount — low-profile Scout Light Pro mount for M-LOK and Picatinny
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Build — aerospace aluminium, O-ring sealed, IPX7, 5.5 oz (156 g)
What the M640DFT fits
The supplied mount fits M-LOK slots and Picatinny rails, so it goes onto most modern rifle and carbine handguards. SureFire lists the DS00, DS07, DS-SR07, SR07, ST07 and UE-SR07 switches for the M300, M600 and M640 Scout Light families, so any of those will fit this light — they sit in weapon light accessories. The same light in tan is the M640DFT Tan, and for a wide flood instead of a hotspot see the M640DF.
Specifications
| Output |
700 lm (SF18650) / 600 lm (two CR123A) |
| Peak beam intensity |
100,000 candela (SF18650) / 90,000 candela (two CR123A) |
| Beam distance |
632 metres (SF18650) / 600 metres (two CR123A) |
| Runtime |
2.75 hours (SF18650) / 1.75 hours (two CR123A) |
| Battery |
One SF18650 rechargeable lithium cell, or two CR123A lithium cells |
| Switching |
ZE68 click tailcap, momentary and constant-on |
| Mount |
Low-profile Scout Light Pro, M-LOK and Picatinny compatible |
| Length |
5.9 in (15 cm) |
| Bezel diameter |
1.258 in (3.19 cm) |
| Weight |
5.5 oz (156 g) |
| Material |
Aerospace aluminium |
| Finish |
Black |
| Water resistance |
IPX7 — 1 metre for 30 minutes |
| MPN |
M640DFT-BK-PRO |
Buy this one for reach across open ground; buy the flood version if most of your shooting happens close in. Order the M640DFT 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, M640DF Scout Light Pro or browse all SureFire
