Yes I have a "One Ragged Hole" peep on my GP100 with a fiber optic front which I like a lot. With a center/center hold the front covers up a lot but is fine for deer size targets at typical iron sight distances and it real quick to get on target. I'd like to find a smaller brass bead front for this gun but Ruger quit making them.

Rod, too.

Short cuts often lead to long recoveries.