Originally Posted by coach
A helmet mounted light is not uncommon. It's primary task would be more so as task lighting like reading a map or when you need both hands for something else. A weapon mounted light would typically be brighter and serve as a source of light to illuminate your path or a room when clearing and for spotting or distracting OpFor.
Quoted for the noobs who feel that head lights are useless. Maybe not good in scirms, but definitely works well in MILSIM!!!