If you were used to working with small images, you'd know that small details such as crosshairs should't be fully outlined because the black line messes up the detail and changes the ak line. It's all about what effect the author means to give the image.
You have to much time on your hands like someone above said I believe.
I have never noticed that and I don't think its that big of a deal and I mean really were you looking for flaws so maybe you could get a reward? Well terrible job but I will give you a cookie.