Okay well i don't have any screen shots sorry
but ill tell you what to do
1. you need a china lake, only weapon it works with, so far haven't tried them all.
2. go to the Luna lander near speed cola
3. look out for a light far in the distance, more towards the right side.
4. aim at it with a china lake, don't ads, you will see this random black circle around your cross hairs.
the more you look away from that light, it starts to fade away, i don't know what it means, or if there's something more to it, but i just wanted to show you guys.
if your having trouble finding this, my gamertag is: jonzo187
PS: I'm in Australia, so if your from somewhere else you will have to put up with the lag, sorry. also i probably wont be on at the same time as you much, and if i am its because its like 3am here so i might not be stuffed playing zombies at that hour.
Also if this has already been posted sorry.