These light heads are a direct replacement for the Surefire M600DF head. They can be used with the Arisaka 18650 body and Arisaka 18350 body. They do not fit the smaller Surefire M600 or M300 bodies, or Arisaka 600 and 300 Series bodies.

These heads are also offered as part of the complete Arisaka 18650 Series Light and Arisaka 18350 Series Light.

The Multi Mode heads feature two selectable modes - High Only and High + Admin. The Multi Mode heads come preset to High Only. If configured for High + Admin, a second press of the switch or remote will toggle between modes. Admin mode has an output level of 15% of High mode, providing for greatly extended run time.

The PLHv2 head has an output of 1350 lumens and 54,000 candela, producing a nice blend of spill and throw which is ideal for all around use.

The OKW head has an output of 680 lumens and nearly four times the throw of the Surefire M600DF, producing a very concentrated hot spot which is ideal for longer distances.

Will's opinion (Owner of Arisaka) - The OKW is my favorite Modlite head. It has a super concentrated beam, almost like a laser illuminator, and can light up targets at 200+ yards without any problems. This head proves the futility of chasing maximum lumens; candela is a much better representation of what you're receiving when you buy a light or head. It will also run off of two CR123 cells at slightly reduced output, giving you an alternative if a charger or additional 18650 cells are not available.