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SureFire M640DF-Pro Duel-Fuel 1500 LU Black Scout Light Pro w/ Picatinny Rail/M-LOK Swivel Mount M640DF-BK-PRO

SKU M640DF-BK-PRO-SureFire

List Price $323.00
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The SureFire Scout Light Pro Dual Fuel provides a highly versatile illumination solution for almost any rifle platform. As the name implies, the Scout Light Pro Dual Fuel can be powered by either a single SF18650B battery, or two 123A batteries. The twin 123A batteries gives the Scout Light Pro Dual Fuel a 1200 lumen output, with the SF18650B battery, it can produce an even brighter output of 1500 lumens. Either output is more than powerful enough to fit your illumination needs and can even temporarily impair your targets vision. It's powerful beam is seamlessly focused though SureFire's own Total Internal Reflection (TIR) lens to create a bright center spot with ample peripheral light for positive target illumination and constant situational awareness. In addition, the Scout Light Pro Dual Fuel attaches to your weapon with a Low-Profile Mount (LPM), this mount can be securely attached to both MIL-STD-1913 Picatinny rails or M-LOK rails.

Features of the SureFire Scout Light Pro Dual Fuel

  • Powered by either (1) SF18650B or (2) 123A batteries
  • SF18650B output: 1500 lumens
  • Twin 123A output: 1200 lumens
  • Up to 250 meter illumination distance
  • Low-Profile Mount


  • OutputSF18650B Battery output: 1500 lumens
    Dual 123A Batteries: 1200 lumens
  • Peak Beam Intensity SF18650B Battery: 16000 candela
    Dual 123A Batteries: 12800 candela
  • Output SettingsSingle-Output
  • Integrated IR IlluminatorNo
  • Battery Type:(1) SF18650B
    (2) 123A
  • Battery TypeSF18650B
  • Battery Life:SF18650B: 1.5 hours
    Dual 123A: 1.25 hours
  • Mounting InterfacePicatinny Rail
  • Weight:5.5 ounces
  • Dimensions:Length: 5.56 inches
    Bezel diameter: 1.125 inches
  • Product TypeWeapon Light
  • Item ConditionNew
  • UPC084871329262

Customer Reviews

Average Rating
December 10, 2023

Great light at a great priceā€¦so good I bought two. Unexpectedly fast delivery.

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January 25, 2024

This is an amazing, simply, and robust weapon light. The gold standard. With the dual fuel option, keeping this unit working is a breeze. Happy to finally have one on my defense gun.

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May 10, 2023

Great light! Bright as hell, great throw, works great on the T.Rex light bar if you're running a can. Will be buying again.

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