M640U Scout Light Pro, LED WeaponLight

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Light is vital when you’re using a firearm in poorly lit conditions, giving you the confidence to hit your target when you can see it clearly. The M640U Scout Weapon Light from Surefire is a great option for those who want a rugged and versatile light that won’t get in the way when using their weapon. With Surefire’s brand new Low-Profile Mount design, just about any gun with MIL-STD-1913 (Picatinny) or M-LOK rail mounts is compatible with this light.

The light itself is made from Mil-Spec Hard-Anodized aerospace aluminum body with a tempered glass window. O-rings are installed to ensure that water, dust, and other debris don’t get inside your firearm when you’re using it in the field, while a reliable Z68 momentary/constant-on push-button switch gives you full control of your light. A recoil-proof LED is powered by two 123A batteries that can provide more than an hour’s use with the light at 1000 lumens.

Output White: 1,000 Lumens
Runtime White: 1.25 Hours
Bezel Diameter: 1.125 inches
Length: 5.5 inches
Weight w/Batteries: 4.8 ounces
Batteries: 123A


The SureFire Scout Light® Pro WeaponLight raises the bar by which all other weapon lights are measured. Featuring SureFire’s new Low- Profile Mount (LPM), the Scout Light Pro delivers unprecedented versatility by allowing the user to optimize the light’s position relative to the handguard and the laser aiming device (if installed). Rugged and reliable, the LPM can be easily and securely attached to any MIL-STD-1913 (Picatinny) or M-LOK rail, and every Scout Light Pro model includes mounting cleats for both rail styles. The Scout Light Pro is a tactical powerhouse, featuring a recoil-proof, premium LED that generates 1000 blinding lumens from two 123A batteries. Focused through SureFire’s proprietary TIR lens, it produces a far-reaching, high-intensity beam with ample surround light. Rugged and reliable, its shrouded Z68 push-button tailcap provides, easy, instant activation with a single click. Constructed of lightweight aerospace aluminum with a Mil-Spec Hard-Anodized finish, and O-ring sealed to keep out the elements, the tough. Scout Light Pro will help you adapt and overcome in combat conditions without any sacrifice in weapon maneuverability.


  • New SureFire Low-Profile Mount (LPM) greatly enhances versatility, allowing the user to mount the Mini Scout Light Pro in the optimal position on any MIL-STD-1913 (Picatinny) or M-LOK rail
  • MIL-STD-1913 (Picatinny) and M-LOK rail mounting cleats are included with every Scout Light Pro model
  • Virtually indestructible ultra-high-output LED generates 1000 lumens of blinding light; produces tactical-level light for 1.25 hours on two 123A batteries
  • TIR lens shapes versatile beam with enough reach and surround light for medium- to longer-range operations
  • Mil-Spec Hard-Anodized aerospace aluminum body, tempered window, and O-ring seals make the Scout Light Pro rugged, durable, and combat-ready
  • Reliable activation via Z68 momentary/constant-on push-button switching with protective shroud

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1 Review