Surefire M640DFT Dual Fuel Turbo Scout Light - 700/600 Lumens

Manufactured by SureFire
Manufactured by SureFire
4 Reviews

In Stock

Orders of non-FFL items will ship same day if ordered before 3:30pm CST (M-F). FFL orders will ship within 5 business days if transfer details are provided.

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This Surefire Turbo Scout light gives you high-candela illumination to lighten up even the darkest of environments. You must be able to see clearly to neutralize your target, and the M640DFT will do just that. Diffused light is still used as a cone shape to give you the situational awareness you need. The M640DFT Turbo Scout Light has been created for you if you typically use a long rifle. The Surefire low-profile mount gives you the ability to adjust the position of the light depending on where you need it according to the accessories and mounts already attached.

  • 700 Lumens with 18650 / 600 Lumens with two CR123
  • 100,000 Candela with 18650 / 90,000 with two CR123
  • Diffused light used to give you situational awareness
  • Made to use on long weapons
  • The low-profile mount gives you the ability to adjust the position depending on other accessories
  • Compact and easy to install
  • Works on M-Lok and Picatinny railing systems
  • Proudly made in the USA 

Made in America with a unique level of American ingenuity, the M640DFT works on M-Lok and Picatinny railing systems. It is compact and easy to install, making it easy for you to see in even the darkest of situations without causing extra stress during installation or operation.
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Battery TypeCR123A 3V Lithium x2 or 18650 3.6V Li-Ion Rechargeable
ModesHigh, Low
Mount CompatibilitySureFire Scout Pro Weaponlights
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to

Ratings & Reviews

4 reviews

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Great light

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I had the Surefire scout dual fuel version before this and was hesitant to buy it. You can see the difference when illuminating cars, especially tinted windows. The candela power makes a difference. When illuminating outdoor areas it’s not as much of a difference and not necessary to spend the money for the upgrade. The candela power and mounting system of the pro version are very nice.

Hell of a weapon light

by -

Everything you would want out of a rifle light. Throw is incredible and there is enough spill to still use indoors


by -

Exceeds all expectations

Surefire finally stepped up.

by -

Surefire finally stepped up with this light. It performs as well as an OKW. It’s a little expensive, but it does come with a built-in quality mount. If you want an upgrade, this isn’t it. However, if you need a new light for a new build, I wouldn’t hesitate choosing this one.