Just got a brand new G&P Acog, and for some reason when Im looking off just a bit to the left, this black rough line comes in and blocks half the site, this comes very annoying as it doesn't appear if im looking straight perfectly into the site. I've been told something about eye relief... but I dunno doesn't feel like it. Heres some pics.
What it should be:
What happens if i move to the left a bit:
