Surefire M640DF Scout Pro Weapon Light – Turbo


Flat Dark Earth (FDE)

Product Description

The M640DFT-PRO Turbo Scout Light Pro combines the best attributes of the standard M640 Scout Light Pro with high-candela performance and dual-fuel capability, and it delivers the farthest-reaching beam and longest runtime of any SureFire long-gun WeaponLight. Ideal for long-range target identification, the M640DFT-PRO projects a blinding, peak beam intensity of 100,000 candela when powered by the included SF18650B rechargeable lithium-ion battery, or 90,000 candela when powered by two 123 lithium batteries. Its precision reflector creates a tightly focused, concentrated shaft of light with minimal bounce when peering over, under or around barricades. At the same time, it provides ample spill light to help the user maintain situational awareness. Surefire’s Low-Profile Mount (LPM) delivers unprecedented versatility, allowing the user to optimize the light’s position relative to the rail and other attached firearm accessories. Rugged and reliable, the LPM easily and securely attaches to any MIL-STD-1913 or M-LOK rail. Constructed of lightweight aerospace aluminum, Mil-Spec hard anodized, and O-ring sealed to keep out the elements, the M640DFT-PRO is the best-performing, most durable, and most feature-rich WeaponLight for its size.


  • Precision reflector produces a high-candela, far-reaching beam ideal for target identification at long distances.
  • Generates 100,000 candela and 700 lumens of tightly focused light with included SF18650B battery.
  • Versatile Low-Profile Mount (LPM) allows the user to optimize the light’s position relative to the rail and other attached firearm accessories.
  • Mounts for MIL-STD-1913 rails and M-LOK rails included.
  • Mil-Spec hard-anodized aluminum body and tempered window make it light rugged, durable, and combat ready.
  • Easy, instant activation via ZE68 momentary/constant-on pushbutton switching with protective shroud.
  • Compatible with a host of SureFire accessory remote switches.
  • Meets IPX7 waterproof test standard at 1 meter for 30 minutes.


  • Lumens: 700 lumens w/ SF18650B; 600 lumens w/ two 123 lithium
  • Runtime: 2.75 hours w/ SF18650B; 1 hour w/ two 123 lithium
  • Candela: 100,000 candela w/ SF18650B; 90,000 candela w/ two 123 lithium
  • Battery: One SF18650B rechargeable (incl.) or two 123A lithium
  • Switching: Click tailcap
  • Length: 5.9 in (15 cm)
  • Distance: 632 meters w/ SF18650B; 600 meters w/ two 123 lithium
  • Construction: Aluminum
  • Finish: Mil-Spec Hard Anodized
  • Weight with Batteries: 5.5 oz (156 g)
  • Bezel Diameter: 1.258 in (3.19 cm)
  • Liquid Ingress Protection: IPX7

Note: SF18650B battery required for 700-lumen output, 100,000 candela, 2.75-hour runtime, and 632-meter beam distance




Technical Information



Mounting Platform






Catalog Location

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 visit