Here's what other sites are saying:
A SureFire KX4 LED conversion head increases the output of two-and three-battery SureFire flashlights using a P60L LED assembly by 50%from 80 to 120 lumens, six times the light output of a two-D-cell flashlight. It also serves as an LED upgrade for SureFire incandescent flashlights equipped with P60 or P61 incandescent lamps. It features an aerospace aluminum bezel in a variety of colors and finishes a precision micro-textured reflector that creates a smooth, flawless beam and a high-efficiency LED emitter with no filament to burn out or break. Simply remove the bezel and P60L, P60, or P61 emitter currently installed on the flashlight and screw on the KX4 LED head to convert.
- Ramsey Outdoor