the negc peep i mentioned comes with two appetures standard.i have also read that in a lot of cases the williams require a lower front sight also. i guess it just depends on what method one uses with these sights.i don't know what the method i use is refered to as,but i do not cover my target with the front pumpkin. i use the top of the front sight as the impact point,this enables me to see where bullet will impact in hunting situations at longer ranges.
