I didn't even think about the green tint till it was mentioned, now it bugs me. And the red wash does show up from time to time, not real often though. Must be when the suns reflextion is at a certain degree. Are these flaws that needs to be sent back and fixed katana?
The bulk on the upper right side doesn't matter a whole lot since it blurs out if you shoot with both eyes open.
I had her out in the 11 degree cold today. Overall, I like it. A few things need fixing to make it an outstanding sight. First thing that I need to do, since I'm not going to return it, is get the thing raised up. With the mount that comes with it the only way you can really use the sight is with the front sight removed. Just hate to spend another $130 for a mount.
Second thing I can control is I need dust caps. Going through heavy brush and rolling around in the snow and dirt got the lenses dusty. I'm not sure what caps I can get for it. A kill flash seems to be unnecessary.
Honestly though, for $400 I think the quirks should have been worked out.
Ask if you have any specific questions. I didn't have time to zero it in on a range though...