One thing about Knights is that they're generally good shooters. It seems that yours is also. For 50 yds with open sights, those are very good groups. I don't know which fiber optic set you got; red rear/green front or red front/green rear. If it's not to your liking Knight will swap them out free of charge. All it costs is postage. Since your going to use open sights with it, that may be something you want to think about.