Very lightly use, military spec, with waever 1" rail fitting. I used this on a 6.5 cal with superb success for the last 16 month ,only in the very best conditions, the tube is perfect & even at 200yds is light day,under the moon, under stars its as good, with no street haze lights from any town or village, a fox can be clearly seen at 200 yd & anything bigger upto 700yard & more depending on size of target! pvs4 gen3 rifle scopes as new for £2700 . cost me £4600- I must have been crazy , but it put more meat in the chill room than a free butchers shop . regretfully i have to sell to fix a job up !
see here > http://www.x20.org/nightvision/PVS4.htm