For nite calling I use a set of 3 rd. gen. gogles and a red lazer. The green lazers are far to bright when useing nite vision. I can tell you that most lazers will have a 4 in. dia. spot at 100 yrds. Well I had to go outside and give it a try. With a green lazer and a Leupold sope on a dark nite, I had no trouble seeing the green dot, but I had no idea what it was on. My guess is that if you had a good moon it might work, but definatrly not like nite vision. BUT definately alot cheaper.
