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Q&A for SureFire M640U Scout Light Pro 1000 Lumen Ultra High Output LED Weapon Light — 15 Questions & 8 Answers

Name SureFire M640U Scout Light Pro 1000 Lumen Ultra High Output LED Weapon Light (4.8)
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Q
Robbie, member, from CA, United States, asked on December 30, 2022

Does this light come with the "duel fuel" rechargeable battery?

Expert Answer
A
Answered by Ethan, Gear Expert, from IL, United States, on January 16, 2023

No, this SureFire M640U Scout Light Pro 1000 Lumen Ultra High Output LED Weapon Light will include (2) CR123A Lithium batteries.

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Q
Joe, member, from WA, United States, asked on November 19, 2022

Which pressure switch is compatible with is light?

Expert Answer
A
Answered by Ethan, Gear Expert, from IL, United States, on February 23, 2023

The SureFire M640U Scout Light Pro 1000 Lumen Ultra High Output LED Weapon Light is compatible with the ST07, SR07-D-IT, and SR07 Tape switches with the use of the SureFire DS00 or UE tailcaps.

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Q
Justin Lofton, member, from OH, United States, asked on July 17, 2022

Can you use a modlite button for this light?

Expert Answer
A
Answered by Hunter, Gear Expert, from OH, United States, on August 01, 2022

The SureFire M640U Scout Light Pro 1000 Lumen Ultra High Output LED Weapon Light is not compatible with the Modlite button. However, it is compatible with the Modlite Scout Tailcaps.

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Q
Daniel, guest, from FL, United States, asked on November 28, 2021

Is there a dim light choice? Or is it only on and off. Not On / dim / off.

Expert Answer
A
Answered by Ethan, Gear Expert, from IL, United States, on January 12, 2022

The SureFire M640U Scout Light Pro 1000 Lumen Ultra High Output LED Weapon Light does not have a dim feature. 1,000 lumens or off.

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Q
KP, guest, from CA, United States, asked on November 20, 2021

Is this mount reversible for mounting the light on the left or right side of the rail?

Expert Answer
A
Answered by Ethan, Gear Expert, from IL, United States, on January 12, 2022

The SureFire M640U Scout Light Pro 1000 Lumen Ultra High Output LED Weapon Light can be mounted on the right or left side of a firearm. The design of the mount allows the light to rotate before tightening it down to your rail.

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Q
Magnum Mike, member, from OR, United States, asked on November 16, 2021

Is there a way to mount this securely so it doesn't flop around the on the pivot?

A
Answered by tscharf0, member, from MN, United States, on January 20, 2022

the flat head screw it pivots on can be tightened to secure it. If you're finding yours is stripped or unable to tighten properly you should contact op or surefire for a replacement.

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Q
ET, member, from NC, United States, asked on March 28, 2021

Does this come with a Surefire Tape Switch?

A
Answered by The MC, member, from VA, United States, on July 27, 2021

No. It does not. It includes the standard momentary push, constant click switch. If the tape switch isn't your thing, I'd just not bother with it. The mod lite switch, surefire sr09, probably something made by arisaka are far better in terms of moving the switch around to different positions. That tape switch uses adhesive to stick to the rail, when I've tried them off they usually get stuck to something like paper and then I just have the Velcro.

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Q
Zavala, guest, from NV, United States, asked on May 14, 2020

There's no option to choose picatinny or mlok. Is it convertablem

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A
Answered by Armando R., Gear Expert, from IL, United States, on December 04, 2020

Surefire includes both the picatinny mount and the M-lok mount with the Surefire Light Pro units.

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Q
Sk Harris, guest, from OH, United States, asked on March 24, 2026

Can you buy the rechargeable battery for this one ?

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Q
Excel Mass, member, from TX, United States, asked on November 09, 2025

Is this light compatible with the UE07 switch?

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Last updated 2025-11-12 UTC.