Sims Prism Sight .019 5pin Left Hand SVL engineers have developed a light collection lens system that loads ambient light directly into the end of the fiber optic material. End-loading fiber is by far the most efficient way to transfer the light source to the end of a fiber-optic pin. In addition to this, the collection lens system is the only technology available that will take natural ambient light from anywhere above the horizon, not only directing it to the fiber end, but intensifying the natural light in the process.SVL has also incorporated our NAVCOMƒ?› material at specific nodal points in the sight in order to eliminate vibration and noise. Incorporating our NAVCOMƒ?› components at just the right locations will ensure your hunting sight will be free of noise and vibration.The LimbSaver?? Prism Sight is fully upgradable to the Elite status, allowing the consumer an option to add the long range single plane adjustable pin or the 2nd & 3rd axis bracket mount at anytime in the future. SVL engineers have designed the standard Prism Sight to seamlessly adapt to both upgrades with a design element for simple but professional installation.