The SureFire MN60 Lamp Assembly is a specially engineered lamp
that, when combined with its designated and carefully engineered
reflector, will produce SureFire’s brilliant and perfectly-focused beam.
The reflector is either integral to the head of your flashlight, or
part of the prefocused lamp assembly.
You can purchase either standard high-output replacement lamps for
your flashlight, or optional ultra-high output lamps that nearly double
the light output (available for most flashlight models). Ultra-high
output lamps use more energy, and therefore deplete batteries more
The MN60 is a standard replacement lamp for the M4 flashlight, it produces a 225 lumen beam for 60 minutes.