*CONTACT US FOR A SPECIAL COUPON CODE*
SureFire M640DFT BK PRO Dual Fuel Turbo Scout Light Pro 6 Volt High Candela WeaponLight Black M640DFT BK PRO UPC 084871331579
Product Description
The SureFire M640DFT-BK-PRO (SKU: M640DFT-BK-PRO / UPC: 084871331579) represents the apex of long-range tactical target identification for modern combat carbines and precision defensive rifles. Engineered as part of SureFire's Turbo Series, this weapon-mounted light pairs high-output Dual Fuel capability with a precision-engineered parabolic reflector that produces an intense 100,000 candela beam reaching out to an astonishing 632 meters. Whether punching through optical photonic barriers, cutting through dense atmospheric smoke and tinted vehicular glass, or positively identifying threats at extended carbine distances, the M640DFT delivers commanding target illumination while maintaining ample peripheral spill for continuous situational awareness.
Precision CNC-machined from lightweight aerospace-grade aluminum, the housing is engineered to withstand extreme thermal expansion, sustained barrel recoil pulses, and destructive muzzle blast pressures from short-barreled rifles and suppressed weapon systems. Treated with a rugged MIL-A-8625 Type III Class 2 Hardcoat Anodized finish, the chassis is entirely impervious to harsh bore solvents, weapon cleaners, salt corrosion, and abrasive environmental grit. The front optical assembly is protected by an impact-resistant, tempered glass window with advanced optical transmission coatings, fully gasket- and O-ring-sealed to guarantee IPX7 waterproof integrity at depths down to 1 meter for 30 minutes.
Equipped with SureFire's innovative Low-Profile Mount (LPM), the M640DFT-BK-PRO revolutionizes rail integration by allowing shooters to pivot the light body directly against backup sights, top-rail laser aiming modules, or secondary tactical accessories, drastically reducing snag hazard and eliminating overall weapon bulk. The light includes interchangeable cleats for both MIL-STD-1913 Picatinny and M-LOK interfaces straight out of the box. Powered by an included high-discharge SF18650B micro-USB rechargeable lithium-ion battery (700 lumens / 100,000 candela for 2.75 hours) or two standard 123A lithium primary cells (600 lumens / 90,000 candela for 1.75 hours), activation is driven by a fail-safe, shrouded Z68 push-button tactical click tailcap with complete modular support for SureFire remote tape switches.
*Armorer Bench Notes & Real-World Staging Guidance:*
Fitment Matrix: Direct mounting to any standard MIL-STD-1913 Picatinny rail or genuine M-LOK handguard slot. CRITICAL: When configuring the Low-Profile Mount (LPM), torque the M-LOK mounting fasteners to exactly 30 to 35 in-lbs into metal handguards (or 15 in-lbs into polymer); torque the Picatinny cross-bolt clamp to 20 to 25 in-lbs. The central LPM pivot screw should be torqued to 15 to 20 in-lbs using a T15 Torx driver once optimal clearance relative to your suppressor, front sight, or IR laser is established. Apply medium-strength threadlocker (Vibra-TITE 121 or Blue Loctite 242) on all mounting hardware. Ensure battery polarity is strictly observed: positive (+) terminal must point forward toward the light head.
- Ensure the host firearm is completely clear, magazine removed, and chamber visually and physically verified empty. Lock the bolt to the rear and set the weapon safety selector to SAFE.
- Select either the Picatinny or M-LOK mounting cleat and attach it to the LPM swing arm using the provided hardware, ensuring threads are treated with medium-strength threadlocker.
- Position the weapon light onto the host handguard at the desired 1 o'clock or 11 o'clock offset position; tighten the mounting screws to manufacturer torque specifications (30–35 in-lbs for M-LOK; 20–25 in-lbs for Picatinny).
- Loosen the LPM pivot screw slightly, swivel the light housing radially inward toward the top rail or barrel to achieve maximum weapon tuck and suppress barrel shadow, then torque the pivot screw securely to 15–20 in-lbs.
- Unscrew the Z68 tailcap, install the included SF18650B rechargeable battery positive (+) terminal forward, inspect the tailcap O-ring, and re-torque the tailcap hand-tight. Function-test both momentary-on and constant-on clicks prior to operational staging.
Key Features
- Extreme 100,000 Candela Peak Intensity: Turbo-series optical reflector focuses 700 lumens into a concentrated long-range beam throwing light out to 632 meters.
- Dual Fuel Power Versatility: Seamlessly operates on the included SF18650B micro-USB rechargeable battery or two standard CR123A 3V lithium cells without swapping bezels.
- Patented Low-Profile Mount (LPM): Radial pivot mount allows the user to tuck the light chassis tightly against rail accessories, lasers, and suppressors for an ultra-compact weapon profile.
- Universal Mounting Hardware Included: Ships complete with interchangeable mounting cleats for both MIL-STD-1913 Picatinny rails and M-LOK handguard slots.
- Mil-Spec 7075/6061 Aerospace Aluminum: CNC-machined aluminum construction with MIL-A-8625 Type III Class 2 Hard Anodized finish withstands heavy recoil shock and bore cleaning chemicals.
- IPX7 Waterproof Protection: O-ring sealed against heavy downpours, dynamic maritime environments, and water immersion up to 1 meter for 30 minutes.
- Tactile Z68 Click Tailcap: Protective shrouded push-button allows instant momentary-on light bursts or full click-activation constant illumination.
- Modular Switching Architecture: Fully compatible with SureFire UE and DS00 tailcap adapters, enabling integration with ST07, SR07, and dual-switch crane assemblies.
Product Specifications
- Brand: SureFire®
- Model/Series: M640DFT-PRO Turbo Scout Light® Pro Dual Fuel WeaponLight
- MPN / SKU: M640DFT-BK-PRO / M640DFTBKPRO
- UPC: 084871331579
- Peak Candela: 100,000 cd (SF18650B) / 90,000 cd (Two 123A Primary Lithium)
- Lumens Output: 700 Lumens (SF18650B) / 600 Lumens (Two 123A Primary Lithium)
- Beam Distance: 632 Meters (SF18650B) / 600 Meters (Two 123A Primary Lithium)
- Runtime: 2.75 Hours (SF18650B) / 1.75 Hours (Two 123A Primary Lithium)
- Bezel Diameter: 1.258 in (32.0 mm)
- Overall Length: 5.90 in (149.8 mm)
- Housing Material: Aerospace-Grade Aluminum Alloy
- Finish: MIL-A-8625 Type III Class 2 Hardcoat Anodized (Black)
- Switch Type: Z68 Shrouded Push-Button Click Switch (Momentary / Constant)
- Mounting Cleats: MIL-STD-1913 Picatinny and M-LOK Mounts Included
- Waterproof Rating: IPX7 Submersible (1 Meter for 30 Minutes)
- Platform Compatibility: AR-15, AR-10, M4, Carbines, PCCs, and Tactical Shotguns
- Country of Origin: United States
