. Used for tactical and low sight situations where abright beam in daylight conditions is needed.. This unit has been tested by the US Army and Coast Guard for work on Picatinny mounts on the M4, M4A2 and M240., Rated at 35mw, it is guaranteed to perform its job well. 532nm green 35mw average output. CR123A battery powered, Picatinny mounting, Pressure switch and end cap switch provided, Only blue laser sight available