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





Cody (verified owner) –
I’ve always been a Streamlight user of the crowd belong it’s “gud nuff” I decided to buy a surefire after having my last 2 streamlights start to flicker while firing. This 640 DFT model is amazing the high candela makes it excellent for projecting a long beam of light while night shooting and I was able to easily spot targets at my range of 300 yards (I’m sure it could be used farther, but I only had 300 yards of open space). Rooftop Defense shipped it quickly and even left me a Dad joke after leaving it in my order notes. This is a great light and I don’t have concerns of it shutting off during recoil.
Justin R L. (verified owner) –
Awesome light from an awesome company! Thank you RD.
Alex (verified owner) –
Insane light! In my opinion, there is no better light on the market. And forget about CD and their flickering.. This is the way
Christopher W. (verified owner) –
It’s surefire and it’s bright! Always shop from rooftop.
Brandon S. (verified owner) –
Fantastic light, fantastic sale price. Rooftop rocks!