Diamondhead polymer sights - Diamondhead Polymer Diamond Integrated Sigting System With Nitbrite Top Mounted Deployable Iron Sight

I really like these sights. This is my second set. They fit the upper receiver and handgaurd very well. I also like the sight aquisition that they have. I would not buy them just because of the night brite option that they come with. It's just a glow in the dark deal that doesn't last long. But if your getting them just to use as regular back up sights they are great.