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Questions & Answers
Will this work with standard rechargeable 18650 batteries or only the rechargeable surefire batteries with the built in charger?

Short answer yes! I have this Surefire scout light pro turbo, and a cloud defensive rein 3.0 that comes with an 18650 flat top battery without the built in micro usb charging port. I popped the rein 3.0 battery in and it turned on! Now the flat top vs the button top, I’m curious to see if either will have different output or battery life. Also curious to see if either will giggle around more and induce an accidental discharge. But yes it does turn on with the 18650 that cloud defensive includes with the Rein 3.0.

by Spooky, Verified Owner, March 18, 2025
Customer Reviews
Helpful Positive Review
The Sun On Your Gun by Grayman18, Verified Owner, August 20, 2023
Amazing product! Like having the sun bolted to your gun!!! The fit and finish on Surefire products is impeccable. I like it so much I'm going to buy them for all my firearms. Highly recommended to anyone looking to add a quality light to their syst...
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8/8 found this helpful
Helpful Positive Review
The best weapon light out there by Trn, Verified Owner, January 13, 2026
It does everything it’s supposed to, and it’s tough!
1/1 found this helpful
Helpful Positive Review
M6400dft turbo by Blueinterceptor, Verified Owner, September 14, 2024
It’s a great light. Not perfect. It has great penetration which makes it good at distance but could use a little more spill. Jmho. It’s reliable doesn’t flicker. The dual fuel option offers flexibility
1/1 found this helpful
Helpful Positive Review
Almost Perfect by Tony, Verified Owner, January 8, 2025
The light is bright and it illuminates very well, but the only con I have for it is the 18650 battery with a micro USB connector that it comes with. Female micro USB ports are notorious for being extremely weak and wears down very quickly from just u...
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1/1 found this helpful
Helpful Positive Review
Surefire M640DFT - excellent rifle light by manny, Verified Owner, February 28, 2024
I recently purchased and tested the Surefire M640DFT Scout light. Overall, the beam throw is very impressive at 100k candela. I also really like the way the mount with the swivel screw allows it to have a low profile. The build quality and mounting...
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1/2 found this helpful
Helpful Positive Review
Honest Review by Greg, Verified Owner, April 11, 2024
I’m not going to deny that this light is everything that is advertised. Very powerful beam and very bright. My first SureFire flashlight and it feels very well built. I will say it’s extremely expensive for a flashlight. I bought it off a great deal ...
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2/2 found this helpful
Read All 36 Reviews
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Product Info for SureFire M640DFT-PRO TURBO Series Scout Light Pro LED Weapon Light

SureFires Scout Light Pro series rewrote the rules of long-gun WeaponLight versatility. The M640DFT combines the best attributes of the M640 Scout Light Pro with high-candela performance and dual-fuel capability. The M640DFT delivers the farthest-reaching beam of any SureFire long gun WeaponLight with the longest runtime. These Rifle Weapon Lights are ideal for long-range target identification.image

The M640DFT projects a blinding, peak beam intensity of 100,000 candela using the included SF18650B rechargeable lithium-ion battery, and 90,000 candela with two 123A primary batteries as well. The M640DFT offers tremendous versatility by providing ample spill light for situational awareness without sacrificing long-range performance.

The Scout Light Pro Low-Profile Mount (LPM) delivers unprecedented versatility, allowing the user to optimize the lights 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 Scout Light Pro is the best-performing, most feature-rich, WeaponLight for its size.

WARNING: California`s Proposition 65

Specifications for SureFire M640DFT-PRO TURBO Series Scout Light Pro LED Weapon Light:

Manufacturer: SureFire
Light Output: 600 lumens, 700 lumens
Bulb Type: LED
Battery Type: 18650, Lithium Ion, 123A Lithium, CR123A
Gun Model: Universal
Beam Distance: 533 m
Diameter: 1.258 in
Length: 5.9 in
Weight: 5.5 oz
Battery Life: 2 hours
Weather Resistance: Yes
Finish: Hard-Coat Anodized MIL-A-8625 Type III, Class II Black
Package Type: Box
Condition: New
Gun Type: Rifle
Mount Type: M-LOK
Fabric/Material: Aluminum
Attachment Type: Picatinny

Features of SureFire M640DFT Turbo Scout Light Pro LED Weapon Light

  • Precision reflector produces a high-candela, far-reaching beam ideal for target identification at long distances
  • Generates up to 100,000 candela and 700 lumens of focused light with an SF18650B, or 90,000 candela and 600 lumens  with two 123A batteries
  • Versatile Low-Profile Mount (LPM) allows the user to optimize the lights position relative to the rail and other attached firearm accessories
  • Mil-Spec hard-anodized aluminum body and tempered window make it light rugged, durable and combat ready
  • Activation via ZE68 momentary/constant-on pushbutton switching with protective shroud
  • Compatible with a host of remote tape switches (see accessories below)
  • Meets IPX7 waterproof test standard at 1 meter for 30 minutes
  • Note: 2.75 hours runtime w/ SF18650B; 1.75 hours w/ two 123 lithium. Distance of 632 meters w/ SF18650B; 600 meters w/ two 123 lithium

Package Contents:

  • SureFire M640DFT-PRO TURBO Series Scout Light Pro LED Weapon Light

SureFire M640DFT-PRO TURBO Series Scout Light Pro LED Weapon Light Orderable Models

List of Orderable Models

  • SureFire M640DFT-PRO Turbo Series 18650/123A High Candela 6-Volt Dual Fuel Scout Pro LED Weapon Light, 123A, 550 Lumens, Black, M640DFT-BK-PRO , MPN: M640DFT-BK-PRO , UPC: 084871331579 , Code: FS-FLW-SS640-M640DFT-BK-PRO
  • SureFire M640DFT-PRO Turbo Series 18650/123A High Candela 6-Volt Dual Fuel Scout Pro LED Weapon Light, 123A, 550 Lumens, Tan, M640DFT-TN-PRO , MPN: M640DFT-TN-PRO , UPC: 084871331586 , Code: FS-FLW-SS640-M640DFT-TN-PRO

SureFire M640DFT-PRO TURBO Series Scout Light Pro LED Weapon Light Unavailable & Discontinued Models

List of Unorderable Models

  • USED SureFire M640DFT Turbo Scout Light Pro LED Weapon Light, 123A, 550 Lumens, Black, M640DFT-BK-PRO, EDEMO2, Condition Like New, Inspect and Rebox , MPN: M640DFT-BK-PRO-EDEMO2 , Code: FS-FLW-SS640-M640DFT-BK-PRO-EDEMO-RE-A
  • USED, SureFire M640DFT-PRO Turbo Series 18650/123A High Candela 6-Volt Dual Fuel Scout Pro LED Weapon Light, 123A, 550 Lumens, Black, M640DFT-BK-PRO , MPN: M640DFT-BK-PRO-EDEMO , Code: FS-FLW-SS640-M640DFT-BK-PRO-EDEMO-RE-C
  • USED SureFire M640DFT Turbo Scout Light Pro LED Weapon Light, 123A, 550 Lumens, Black, M640DFT-BK-PRO, EDEMO3, Used, Condition Fair , MPN: M640DFT-BK-PRO-EDEMO3 , Code: FS-FLW-SS640-M640DFT-BK-PRO-EDEMO3
  • DEMO, SureFire M640DFT Turbo Scout Light Pro LED Weapon Light, 123A, 550 Lumens, Black, M640DFT-BK-PRO , MPN: M640DFT-BK-PRO-DEMO , Code: FS-FLW-SS640-M640DFT-BK-PRO-DEMO
  • USED SureFire M640DFT Turbo Scout Light Pro LED Weapon Light, 123A, 550 Lumens, Black, M640DFT-BK-PRO, EDEMO1, Used, Condition Like New , MPN: M640DFT-BK-PRO-EDEMO1 , Code: FS-FLW-SS640-M640DFT-BK-PRO-EDEMO1
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