Fact Sheet: SureFire M6 Guardian


SureFire M6 Guardian

The SureFire M6 Guardian is an Ultra high-output incandescent flashlight for tactical, duty, or searchlight use.  Effectively a wider-bodied, slightly heavier, more powerful version of the M3T CombatLight, the M6 features a shock-isolated 2.5″ bezel which provides extra recoil and impact protection for the lamp filament.  The M6 comes equipped with both the MN20 and MN21 lamp assemblies.

Over the course of its production history, the M6 has gone by a variety of names including MagnumLight, Millennium Magnum, and finally Guardian.  Due to its larger body size, the M6 uses a unique tailcap that is not interchangeable with any other handheld SureFire lights.  The bezel threads match those found on the M3 and M4 Devastator.

SureFire M6 Guardian

Light Information – SureFire M6 Guardian

Production Status:  Discontinued

Light Type:  Handheld

Body Type:  Straight

Voltage/Source:  9V / 6 x Duracell DL123A Lithium Battery or 6 x SureFire CR123 Lithium Battery

Lamp Assembly:

  • Standard:  MN20 Hi-Pressure Xenon/Halogen (250 lumens)
  • Standard:  MN21 Hi-Pressure Xenon/Halogen (500 lumens)

Rated Runtime:  

  • With MN20:  60 minutes
  • With MN21:  20 minutes

Body Construction:  Aluminum

Body Finish:  Type III Anodizing

Primary Production Color:  Olive Drab (Type III)

Switch:  Tail mounted.  Press for momentary, twist for constant-on

Year(s) of Production:     – 2011

Length:  7.9 inches (201 mm)

Body Diameter:  1.75 inch (44 mm)

Bezel Diameter:  2.5 inches (64 mm)

Weight:  15.9 ounces (451 grams)


  • 2001 – $349.99
  • 2008 – $425.00
  • 2011 – $425.00

Ordering Options – SureFire M6 Guardian

M6:  Box package – M6 with 6 123A batteries, MN20 lamp assembly, MN21 lamp assembly, and lanyard system.

M6-CB:  Box package – M6 Guardian with crenelated bezel.  Includes 6 123A batteries, MN20 lamp assembly, MN21 lamp assembly, and lanyard system.

Photo Gallery – SureFire M6 Guardian

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Compatible Accessories and Optional Equipment – SureFire M6 Guardian

Beam Modifying Accessories:

  • FM23 Infra-Red Beamfilter
  • FM24 Wide angle Beamshaper
  • FM25 Red BeamFilter
  • FM26 Blue BeamFilter
  • FM27 Protective Cover

Conversion Kits:

  • KL6 Conversion Head:  Converts M6 Guardian into LED flashlight

Posted in SureFire M Series.

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