I've used single pin sliders for many years. I know there's a lot of setups out there, from high to low end. Do yourself a favor and look seriously at the HHA Optimizer. I tried a couple of the lower end sights (cobra was the last cheap one), and they kept breaking. Cheap components, not robust at all. Then in 2004 I switched over to HHA, and have been with them ever since. Never had a problem with them. I shoot 3D league, and occaisional spots, and hunt all with the same setup. The HHA pulls in tons of light, has solid windage "clicks" for adjusting, and a great warranty.