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LED WeaponLight Conversion Kit – White and IR Output

KM4 LED WeaponLight Conversion Kit -- BLACK

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Quality and reliability

Great product with increase to battery life and easy of us in the ability of switching to various light uses, depending on the demands of tactical operations. Rugged construction to handle the daily abuse of training and real world environment demands. This is why Surefire is second to none.

Reviewed by C.Brock (Posted on 12/17/13)

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Max Output -- White Light150.0lumens
Tactical Runtime**2.5hours
Output / Runtime -- IR120.0mW
Bezel Diameter1.37inches
*Runtime until output drops below 10% of maximum output


KM4-BK KIT01 084871315098
KM4-TN KIT01 084871315104
The V-Series KM4 LED conversion head, a direct screw-on replacement for the existing head on certain SureFire Millennium Universal® WeaponLights, Dedicated Forend WeaponLights, and Vertical Foregrip WeaponLights, produces both brilliant white light and intense IR output from one dual-LED emitter assembly. A bezel selector ring allows you to easily switch back and forth from white to infrared output—and it is self-locking so it stays securely on the selected light output, until you decide otherwise. The high-efficiency LEDs are virtually immune to failure since there's no filament to burn out or break, and provide significantly longer runtimes per set of batteries than incandescent emitters of similar output. The KM4 head features a Total Internal Reflection (TIR) lens that produces a comparatively tight beam suited for close- to medium-range applications. The O-ring sealed aerospace aluminum body is Mil-Spec hard anodized in your choice of Black (BK) or Desert Tan (TN). Kit includes: conversion head, new head O-rings, O-ring lubricant, and applicator brush.

Fits: M5(xx) Dedicated Forend WeaponLights, M9(xx) Vertical Foregrip WeaponLights, M96(xx) Millennium Universal WeaponLights

  • Virtually indestructible white and IR LEDs regulated to maximize light output and runtime
  • Tactical-level output with TIR lens for close- to medium-range applications
  • Self-locking selector ring permits easy switching from white light to IR output, no filters required
  • Construction—High-strength aerospace aluminum with Mil-Spec anodizing; coated, tempered window
  • Available in Black (BK) or Desert Tan (TN)

Related Information

Warning: Non-Removable Illumination Tool Heads

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SureFire is Designed and Built in the USA