How visible is Laser Sight to enemies?

you wouldnt be able to see it, if you are talking about the beam itself, unless maybe in smoke or dust or you had some kinda night vision goggles. its why the claymore thing just triggers me (pun intended) you wouldnt just be always able to see super bright beams of red coming from the darn thing lol.....but also I have the understanding that green is more visible in bright situations then red (I dont own a green so cant confirm).........and sorry for the long stupid comment, but ya to your question, no.. I dont see alot of players with bright beams of light coming from them, so maybe the game got that part right