Weapon Light Surefire M640DFT-PRO is a high-performance tactical flashlight designed for professional weapon-mounted use. Engineered for maximum throw and brightness, it combines the distinctive features of the Turbo series with the versatility of the Scout Light Pro. It delivers the longest beam distance and runtime of any weapon-mounted light of this size from SureFire.

With a peak beam intensity of up to 100,000 candela and brightness of 700 lumens, this rifle-mounted light ensures clear target identification at distances up to 632 meters, making it the ideal solution for low-light shooting scenarios.

The Surefire M640DFT-PRO runs on an SF18650B rechargeable battery, included in the kit, delivering up to 2.75 hours of runtime. It can also operate on two 123A lithium batteries, offering up to 1.75 hours of use. Its precision reflector produces a tightly focused beam with minimal spill, which is critical for tactical maneuvers and cover-based operations.

Featuring a Low-Profile Mount, this weapon light easily attaches to both MIL-STD-1913 and M-LOK rails, allowing for optimal positioning alongside other accessories.

Surefire Turbo is a reliable rifle light that combines high output, modularity, and top-tier American-made quality. It is compatible with Surefire remote switches and includes an ergonomic tailcap for instant activation.

This tactical flashlight is built primarily for professionals who demand dependable, high-powered illumination. It’s designed for military personnel, special operations units, law enforcement officers, and civilian gun owners involved in competitive or practical shooting, or private security.

The light excels at long-range target identification in dark or low-light conditions, during search and rescue missions, and in tactical scenarios requiring a focused beam without excessive spill. At the same time, it provides peripheral illumination for enhanced situational awareness. It’s ideal for patrol, perimeter checks, room clearing, or any situation where rapid environmental assessment is critical. The light is also suitable for hunters needing to spot targets hundreds of meters out, as well as for weapons training or nighttime shooting.

Thanks to its rugged construction, water and dust resistance, and versatile mounting system, this weapon-mounted light performs reliably on combat platforms such as carbines and rifles, delivering maximum durability and ease of use in any environment. If you’re looking for a tactical light built to operate under extreme conditions, the Surefire M640DFT-PRO is your go-to choice.

Specifications

Type: Tactical weapon light, rifle-mounted
Light Output:
700 lumens (with SF18650B battery)
600 lumens (with two 123A batteries)
Peak Beam Intensity:
100,000 candela (with SF18650B battery)
90,000 candela (with 2×123A batteries)
Beam Distance:
Up to 632 m (SF18650B battery)
Up to 600 m (123A batteries)
Runtime:
Up to 2.75 hours (SF18650B battery)
Up to 1.75 hours (123A batteries)
Body Material: Aerospace-grade aluminum, Mil-Spec anodized, tempered glass lens
Mount: Low-Profile Mount (LPM), compatible with MIL-STD-1913 and M-LOK
Water Resistance: IPX7 (submersible to 1 m for 30 minutes)
Dimensions: Length — 5.9 inches, Bezel diameter — 1.26 inches

Weight (with batteries): 5.5 ounces

Power Source: 1× SF18650B rechargeable battery (included) or 2× 123A batteries

Included: Surefire M640DFT-PRO flashlight; MIL-STD-1913 and M-LOK rail mount; hex key; USB charging cable; flashlight documentation; English user manual.