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SCOUT LIGHT® USER MANUAL

SUREFIRE M640U Ultra High Output LED Scout Light - Cover

SPECSKE1HKE2-BKXIBKE2-DFKM1-EKM2-C
OUTPUT500 lumens1,000 lumensHigh: 600 lumens
Low: 100 lumens
18650: 1,500 lumens
123A: 1,200 lumens
WH: 250 lumens
IR: 100 Mw
WH: 350 lumens
IR: 120 mW
RUNTIME1.0 hours1.25 hoursHigh: 1.5 hours
Low: 5 hours
18650: 1.5 hours
123A: 1.25 hours
WH: 1.5 hours
IR: 6 hours
WH: 2.5 hours
IR: 16.75 hours
PEAK BEAM INTENSITY7,600 candela11,300 candela14,750 candela18650: 16,000 candela
123A: 12,800 candela
9,300 candela12,750 candela
DISTANCE175 meters213 meters243 meters18650: 250 meters
123A: 220 meters
190 meters225 meters
BEZEL DIAMETER1.125 in (2.9 cm)1.125 in (2.9 cm)1.37 in. (3.48 cm)1.125 in (2.9 cm)1.06 in (2.7 cm)1.06 in (2.7 cm)
CONSTRUCTIONAluminum
FINISHHard Anodized (MIL-A-8625 Type III, Class 2)

All performance claims tested to ANSI/NEMA FL1-2019 Standard.

SUREFIRE M640U Ultra High Output LED Scout Light - Scout Light User Manual & Configurator

MOUNTING TO WEAPON

M-MLOK-S: See Magpul instructions enclosed
M-1913-S: Use a flathead screwdriver to tighten or loosen mount screw

BATTERY INSTALLATION

  1. Remove the LED head by unscrewing it counterclockwise and remove depleted battery(ies)
  2. Insert fresh battery(ies) with the positive (+) terminal(s) facing forward toward the head
    WARNING: Do not mix depleted batteries with new batteries
  3. Screw LED head clockwise until hand tight

LIGHT OPERATION

REMOTE TAPE SWITCHES
ST07: Press pressure pad for momentary-on
SR07: Press pressure pad for momentary-on; depress pushbutton until it clicks for constant-on

SR07-D-IT: Press pressure pad with bump to activate Weapon Light; Press pressure pad without bump to activate auxiliary device

SWITCH HOUSING
Z68:
Partially depress pushbutton tailcap switch for momentary light. For constant light, fully depress pushbutton tailcap switch until it clicks on
UE: Requires remote tape switch
DS Style: Partially depress pushbutton tailcap switch or press the pressure tape switch for momentary light. For constant light, fully depress ushbutton tailcap switch until it clicks on. Remove plug by rotating and pulling plug outward. When pressure switch is detached, use socket cover to keep dust out

MULTI-SPECTRUM OUTPUT SELECTION (KM1/KM2)

Rotate bezel selector ring clockwise to select white-light or counterclockwise to select infrared

  WARNING
ALWAYS confirm weapon is unloaded and on SAFE before attempting installation.
WARNING
Use of substandard batteries can cause injury or property damage. Visit www.surefire.com/batterysafety.

SUREFIRE - icon 1 BATTERY INFORMATION & WARNING

Before replacing batteries, read the enclosed BATTERY INFORMATION/WARNING insert in your original packaging. For additional battery safety, handing, and product information, visit www.surefire.com/batteries.

MAINTENANCE

Use a clean, dry cloth to wipe off body and window. Periodically clean and lubricate threads. Apply a thin coat of non-migrating, silicon-based lubricant to O-rings (do not use petroleum-based lubricants which can harm O-rings). For additional tips on maintaining your SureFire illumination tool, visit www.surefire.com/faqs-maintenance.

ACCESSORIES

SureFire makes a full line of accessories for most of its illumination tools. For a complete listing, visit www.surefire.com/partsaccessories.

THE SUREFIRE NO-HASSLE GUARANTEE

We’ll do what it takes to keep your SureFire gear running smoothly. SureFire warrants that if you — our customer — purchase one of our products, and we determine that it is defective in material and/or workmanship during your lifetime, we will repair or replace it — no hassle!
Our warranty does not cover consumables or normal wear-and-tear — things like batteries draining, headbands and headpads wearing out, ink cartridges running out, and switches wearing out — or damage resulting from abuse, alterations, unauthorized repairs, or use contrary to SureFire’s user manuals.

Should you need a replacement product, SureFire reserves the right to replace an obsolete product with a current production, like model. In the event that any issue with a SureFire product is not covered under this warranty SureFire can arrange to have the product repaired for a reasonable fee.

STANDARD DISCLAIMER

Except as specified above or prohibited by applicable law: all express or implied conditions and warranties, including, without limitation, any implied warranty or condition of merchantability or fitness for a particular purpose, or accuracy of any informational content, are hereby excluded and disclaimed by SureFire; and in no event will SureFire be liable for any special, direct, indirect, consequential, incidental or punitive damages howsoever arising and regardless of the theory of liability, even if advised of the possibility of such damages. Products, prices, availability, specifications, and offers are subject to change or cancellation at any time without notice.

WARRANTY CLAIMS

For claims, contact Customer Service at 714-545-9444 to obtain a Return Merchandise Authorization number (RMA#). Then package the unit carefully and send to (no CODs):

SUREFIRE - LogoSureFire, LLC.
Repairs Department, RMA#____
17680 Newhope Street, Suite B
Fountain Valley, CA 92708

SureFire will pay any reasonable shipping costs to return the unit to you.

18300 MT. BALDY CIRCLE, FOUNTAIN VALLEY, CA 92708-6122 SUREFIRE.COM

Revision B 3-2021
71-01-1102

SUREFIRE M640U Ultra High Output LED Scout Light - Disposal
18300 MT. BALDY CIRCLE,
FOUNTAIN VALLEY, CA 92708-6122
SUREFIRE.COM

Documents / Resources

SUREFIRE M640U Ultra High Output LED Scout Light [pdf] User Manual
M640U, Ultra High Output LED Scout Light

References

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