Surefire M640 Dual Fuel Turbo Scoutlight Pro Weapon Light | M640DF
The M640DFT-PRO Turbo Scout Light Pro combines high-candela performance and dual-fuel capability
See Farther. 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.
Our 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.
- Turbo reflector delivers the farthest-reaching beam of any SureFire Scout Light Pro WeaponLight
- Low-Profile Mount (LPM) allows optimum light positioning; ideal for use with other rail-mounted accessories
- Mounting hardware for MIL-STD-1913 and M-LOK rails is included





Aaron L. (verified owner) –
Let me start by saying thy rooftop defense seems to be committed to providing the best service possible.
However, surefire can kick rocks. I got my light delivered and right out of the box it didn’t turn on.
I tried multiple charged surefire batteries that worked in other lights but this scout light would not turn on. After spamming the button I was able to get it to turn on for half second then it went out and never came back on.
I contacted their customer service but have not heard back yet. It’s very frustrating to drop this kind of cash on an “industry leading” product to not have it work at all. I know I’m not alone in this I was reading on some tactical forms and Surefire forms and other people have had similar experiences.
Ramone (verified owner) –
Quick shipping, great price. With a free meal, it really doesn’t get any better than that.
Keef (verified owner) –
Everybody needs one of these lights, it is the industry standard for a reason. Outstanding service, thank you Rooftop friends!
Nathan (verified owner) –
I love Rooftop. I always check here before looking anywhere else. They’re great people to deal with, ship wicked fast, are responsive & have great communication. And most importantly they usually have the best price. They blew the competition away on this surefire light. I have and will continue to shop smart, shop Rooftop. Five stars, every dang ol’ time. GOBBLES
Christian D. (verified owner) –
Quick shipping as always! Great price as well. Thank you Rooftop Defense!