Do a google search. I think you'll find one pretty fast. I don't like hoods on my front sights, however...
If the light from the sun is on one side or another it effects the sight picture enough to change POI as I recall. I don't worry too much about this issue.

I prefer classic.
Semper Fi
I used to run with the hare. Now I'm envious of the tortoise and I do my own stunts but rarely intentionally