I remember coming across those visible green lasers when I was doing a search for a red visible laser. Something that you wouldn't need smoke or fog to see. Well needless to say at $349.00 for one.
The Green pickup laser is the newest thing in projected pointers...It's the new choice of spec. forces as aiming devices on their weapons. There are even white lasers that are invisible to the eye but are visible with nightvision. It's called concealed sighting major tech. stuff in the government agencies... just if you wanted to know....