SureFire M640DF PRO Dual Fuel Scout Light

The SureFire M640DF PRO Dual Fuel Scout Light is a high-output weapon-mounted light designed for professional and tactical applications. Delivering up to 1,500 lumens when powered by the included SF18650B rechargeable lithium-ion battery, it provides powerful white light optimized for close- to mid-range target identification.

The M640DF PRO features Dual Fuel capability, allowing operation with either the SF18650B rechargeable battery or two CR123A batteries. Its integrated Low-Profile Mount (LPM) provides flexible positioning on both Picatinny and M-LOK rails while maintaining a streamlined footprint.

Constructed from aerospace aluminum with a Mil-Spec hard-anodized finish, it is engineered for durability under recoil and demanding environmental conditions.

Product Variants

• M640DF-BK-PRO – UPC 084871329262
  Finish: Black
• M640DF-TN-PRO – UPC 084871329279
  Finish: Tan

Key Features

• Dual Fuel capability (SF18650B rechargeable or CR123A batteries)
• 1,500 lumen maximum output (with SF18650B)
• Precision reflector for balanced beam performance
• Integrated Low-Profile Mount (LPM)
• Compatible with Picatinny and M-LOK rails
• Aerospace aluminum body
• Mil-Spec hard-anodized finish
• O-ring sealed weather-resistant construction

Technical Specifications

• Brand: SureFire
• Product Name: M640DF PRO Dual Fuel Scout Light
• Model: M640DF-PRO
• MPN (Black): M640DF-BK-PRO
• UPC (Black): 084871329262
• MPN (Tan): M640DF-TN-PRO
• UPC (Tan): 084871329279
• Maximum Output (SF18650B): 1,500 lumens
• Maximum Output (CR123A): 1,200 lumens
• Peak Beam Intensity: 16,000 candela
• Beam Distance: 253 meters
• Runtime (SF18650B): 1.5 hours
• Runtime (CR123A): 1.25 hours
• Battery Type: SF18650B rechargeable lithium-ion or two CR123A
• Mounting System: Integrated Low-Profile Mount (Picatinny / M-LOK compatible)
• Body Material: Aerospace aluminum
• Finish: Mil-Spec hard anodized (Black or Tan)
• Water Resistance: IPX7
• Length: 5.56 inches
• Weight (with SF18650B): 5.5 oz
• Country of Manufacture: USA
• Condition: New
• Warranty: SureFire Limited Lifetime Warranty

What’s Included

• SureFire M640DF PRO Dual Fuel Scout Light
• SF18650B Rechargeable Battery
• Picatinny Mount Hardware
• M-LOK Mount Hardware
• Owner’s Manual
• Manufacturer Packaging