SUREFIRE M640U Ultra High Output LED Scout Light User Manual

: June 6, 2024
: SUREFIRE

Table of Contents

MOUNTING TO WEAPON
LIGHT OPERATION
MULTI-SPECTRUM OUTPUT SELECTION (KM1/KM2)
BATTERY INFORMATION & WARNING
MAINTENANCE
ACCESSORIES
THE SUREFIRE NO-HASSLE GUARANTEE
STANDARD DISCLAIMER
WARRANTY CLAIMS
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SCOUT LIGHT® USER MANUAL

SPECS	KE1H	KE2-B	KXIB
OUTPUT	500 lumens	1,000 lumens	High: 600 lumens
Low: 100 lumens	18650: 1,500 lumens
123A: 1,200 lumens	WH: 250 lumens
IR: 100 Mw	WH: 350 lumens

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

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

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

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