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SureFire Turbo Scout Light Pro: Gun Tech Review

This Gun Tech Review shines a light on the SureFire Turbo Scout Light Pro M640DFT. The weapon light offers high-candela output, dual-fuel capability and a versatile, low-profile mounting system.

SureFire Turbo Scout Light Pro: Gun Tech Review

The Turbo Scout Light Pro M640DFT provides the farthest-reaching beam and longest runtime of any SureFire long-gun light. The 71,000-candela (550-lumen) beam is powered by either a rechargeable SF18650B or two CR123A lithium batteries. $399 (Photo by Alfredo Rico)

Through the years, projected light technology has evolved exponentially. The clunky, not-so-bright lights of yesteryear have been replaced with compact, ultra-bright offerings, which now include the SureFire Turbo Scout Light Pro.

Developed using anodized aerospace-grade aluminum, SureFire’s Turbo Scout Light Pro features tempered glass for durability. O-ring seals help to keep the unit safe from the elements, which earned an IPX7 waterproof rating, meaning it is waterproof when submerged in 1 meter of water for 30 minutes. This ruggedly built light measures 5.9 inches long and has a bezel diameter of 1.2 inches. At just 5.5 ounces, the Turbo Scout Light Pro won’t weigh you down if you have to search or shoot.

In a potential deadly force encounter, even the most well-constructed light won’t do you any good if it’s not sufficiently bright. While most lights are bright enough to illuminate a silhouette target at the range, lights designed for reality need to be bright enough to enable the user to identify a threat. The consequences of mistaking a non-threat for a deadly threat (or vice-versa) could be tragic. Beyond threat identification, an intense beam of light can compromise an adversary’s vision, making it harder for him to see you.

Scout Light Mount
The Low-Profile Mount (LPM) enables the user to secure the light to a Picatinny rail or M-Lok slot in several orientations. (Photo by Alfredo Rico)

When measuring a flashlight’s brightness, two standards are often cited: Lumens and candela. “Lumens” refer to the total amount of light emitted. “Candela” denotes how much light is emitted in a particular direction. The latter has more to do with how far a beam of light projects. The Turbo Scout Light Pro’s reflector produces a beam that reaches 533 meters using either battery type.

With a lumen output of 500 (SF18650B battery) and a candela of 71,000, the Turbo Scout Light Pro produces a bright, far-reaching beam that’s just as effective in close quarters. Run time is 2 hours when loaded with the SF18650B battery, and 1 hour when two CR123A batteries are installed.

The Turbo Scout Light Pro mounts easily to a Picatinny rail or M-Lok slot. The mount supports a low profile, user-configurable light source. Once attached, the hinged Low-Profile Mount (LPM) allows the unit to rotate along a vertical plane to the desired position.

Scout Light Hinged Mount Positions
A hinged Low-Profile Mount prevents the light from interfering with other attachments. It can be adjusted vertically to the user’s preference. (Photo by Alfredo Rico)

The tailcap activation button supports momentary or constant-on use, and a protective shroud prevents unintended activation. The Turbo Scout Light Pro is compatible with a variety of remote activation switches, too, a testament to its versatility.

Looking for a long gun light? This is currently the latest and greatest. Visit surefire.com for more information.

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