SureFire M640T Turbo Scout Light Pro: The Definitive 70,000 Candela Light with 529 Meter Reach for Picatinny & M-LOK Rails

• The SureFire M640T Turbo Scout Light Pro is a dedicated high-candela weapon light engineered for long-range target identification and duty rifles. It delivers a tightly focused beam capable of penetrating photonic barriers like window tint or heavy fog, giving you a clear sight picture when it matters most. Built with a Mil-Spec hard-anodized aluminum body, this light is designed to withstand harsh combat environments and recoil.
• Pierces Tinted Glass with 70,000 Candela: This high-intensity beam pushes light 529 meters downrange, giving you Positive Identification (PID) through photonic barriers like window tint, streetlights, or heavy fog where standard lights wash out.
• Retains Peripheral Vision with 700 Lumens: The optimized beam pattern balances its long-range throw with useful spill light. This ensures you can track movement on the sides of your target without blinding yourself on indoor walls.
• Eliminates Snag Hazards using the Low-Profile Mount: The included LPM hinge allows you to rotate the light body flat against your rifle’s handguard. By tucking the light tight to the weapon, you reduce the profile significantly for easier maneuvering in tight spaces.
• Withstands Submersion with an IPX7 Waterproof Rating: You can rely on this light even after 30 minutes under 1 meter of water. The sealed, hard-anodized aluminum body prevents failure during heavy rainstorms, mud exposure, or river crossings.

Video Review

What are some common accessories to add to the SureFire M640T Turbo Scout Light Pro?

Power Assurance for the M640T WeaponLight

• SureFire 123A Lithium Batteries: Optimized for high-drain electronics, these batteries ensure your SureFire M640T delivers its peak output. They feature a 10-year shelf life, making them essential for long-term storage and backup kits.

Tailcap Interface Adapters

• SureFire Scout Light Remote Switch Tailcap: This replacement tailcap converts your M640T from a simple push-button light to a remote-switch capable system. It is the required adapter to attach any of the tape switches listed below for ergonomic control.
• SureFire DS Scout Light Remote Switch Tailcap: Provides redundant activation methods for your SureFire M640T WeaponLight. It features an integrated click-on/off push button assembly and a socket for a remote tape switch, ensuring you always have a backup way to turn on the light if the cable fails.

Command & Control Switches

• SureFire ST07 Remote Tape Switch: A low-profile, momentary-on pressure pad that mounts anywhere on your rifle using adhesive backing. It is ideal for setups where rail space is limited or grip position varies.
• SureFire SR07 Rail Grabber Tape Switch: This switch clips directly onto the Picatinny rail of your handguard without adhesive. It offers both momentary-on and constant-on activation, giving you a solid mounting point that will not shift under heavy recoil.
• SureFire CSP-07 Rail Grabber Tape Switch: Designed for maximum control, this switch allows for momentary-on firing and a constant-on click switch. It mounts securely to the rail, giving you precise light discipline options during extended operations.
• SureFire SR07-D-IT Remote Dual Switch: Streamlines your kit by controlling two devices with one switch assembly. It operates your M640T Turbo Scout Light Pro and a compatible laser aiming device (like an ATPIAL) simultaneously or separately, saving valuable rail space.

SureFire M640T Turbo Scout Light Pro Long-Gun WeaponLight Features & Specifications

The SureFire M640T Turbo Scout Light Pro Long-Gun WeaponLight is designed to solve the problem of "photonic barriers"—situations where standard lights fail to penetrate window tint, streetlights, or fog. As a High-candela weapon light, it concentrates 700 lumens into a tight beam that rivals a 100,000 candela rifle light in practical throw, allowing you to positively identify threats from over 500 meters away while staying safely outside their effective range. Combined with the versatile Low-Profile Mount (LPM), you can tuck this light tight against any rail, minimizing snag hazards and keeping your rifle setup streamlined for professional use.

Key Features

• Positive Identification (PID) at Distance: Delivers a Long-throw beam pattern that cuts through photonic barrier penetration challenges like tinted glass and umbrella lighting.
• Low-Profile Mount (LPM): Includes a hinged Offset light mount included in the box that attaches to both M-LOK and Picatinny compatible rails, allowing you to rotate the light body close to the handguard.
• SureFire Dual Fuel technology: Runs on two 123A lithium batteries (included) or a single SF18650B USB rechargeable battery for adaptable power options in the field.
• Duty grade weapon light Durability: Constructed with a Hard-anodized aluminum body to withstand combat recoil and harsh weather.
• IPX7 waterproof rating: Rated for complete submersion in 1 meter of water for 30 minutes.

Specifications

• High Output: 700 Lumens
• Peak Beam Intensity: 70,000 Candela
• SureFire M640T Turbo beam distance: 529 Meters
• SureFire M640T runtime chart: 1.5 Hours (using 123A batteries)
• Batteries: 2x 123A Lithium (Included) or 1x SF18650B (Compatible)
• Length: 5.5 in (13.9 cm)
• Bezel Diameter: 1.125 in (2.9 cm)
• Weight: 5.5 oz (156 g) with batteries
• Construction: Aluminum with Mil-Spec Hard Anodized Finish
• Waterproof Rating: IPX7 (1 meter for 30 minutes)
• Black SKU: SureFire M640T-BK-PRO
• Tan SKU: SureFire M640T-TN-PRO

What's in the box of the SureFire M640T Long-Gun WeaponLight?

• (1) SureFire M640T Turbo Scout Light Pro
• (1) Z68 Tailcap
• (1) MIL-STD-1913 "Picatinny" Mount Cleat
• (1) M-LOK Mount Cleat
• (2) 123A Lithium Batteries

Product FAQs

Why is this considered the Best long-range rifle light? 

It combines a massive 529-meter throw with a compact body. The high candela rating allows for defeating umbrella lighting and seeing through barriers that wash out other lights.

What are lumens? 

Lumens measure the total amount of light that comes out of the bulb. Think of it like the "volume" of the light. 700 lumens is bright enough to light up a room or help you see things on the sides of your vision (peripheral vision).

What is candela, and why does this light have so much? 

Candela measures how focused the beam is. High candela means the light can travel a very long way. This light has 70,000 candela, which is extremely high. It creates a tight spotlight that lets you see targets over 500 meters (5 football fields) away.

What is PID?

 Positive Identification (PID) simply means being 100% sure of what you are looking at. Because this M640T Long-Gun WeaponLight is so powerful, it lets you clearly see if a person is holding a weapon or just a phone, even from far away.

What is a "photonic barrier"? 

A photonic barrier is anything that blocks or "eats" your light. This can be tinted car windows, bright streetlights shining at you, or thick fog. The M640T Turbo Scout Light Pro Long-Gun WeaponLight is built to punch right through these barriers so you can see what is behind them. [Read our full guide on Photonic Barriers here].

Is this a good Tactical light for SPR? 

Yes. The long throw makes it ideal for Special Purpose Rifles (SPR) where you need to engage targets at extended distances.

Does it offer Home defense light blinding capabilities? 

Absolutely. The concentrated beam is intense enough to momentarily blind and disorient an intruder, giving you a tactical advantage.

Is the light waterproof? 

Yes. It has an IPX7 waterproof rating. This means you can drop it in 1 meter of water (about 3 feet) for up to 30 minutes, and it will still work perfectly. Rain, mud, and snow are no problem.

Is this light modular? 

Yes. It is a CR123A compatible scout light that also accepts rechargeable cells. You can change the tailcap switch to use remote tape switches. The mount is also adjustable to fit different rails.

What is the Scout Light Pro footprint? 

This refers to the special hinge mount built into the light body. Unlike older lights that are stuck in one spot, the Scout Light Pro footprint lets you rotate the light flat against your rifle. This keeps it from sticking out and getting snagged on your clothes or gear.

Where can I find the manual?

 You can download the official user manual for the SureFire M640T WeaponLight here: SureFire M640T Manual.

Where can I purchase the M640T?

 If you are looking for the SureFire M640T for sale, you can buy it directly from Atomic Defense. We currently have the SureFire M640T WeaponLight for sale and ready to ship to your door.