ORIGINAL: goatbrother
Those sights are either Marbles or Truglo. Try a Twilight appeture or no appeture at all. My brother likes the Twilight and I prefer no appeture (like a ghost ring). The fiber optic fronts can be helpfull although the one that came on the UMags and M97s have too big a bead. I like the smaller beads myself.
The Ghost sights from William are like 79 dollars, the RMC Vpeep was $29, and both did the same thing. If your looking for function and value, go the Vpeep, I don't know the advantage of the Ghost sight over the Vpeep.
Chap