If you're in the market for a solid red-dot optic that provides enhanced performance and durability for both range and field use, look no further than the Holosun HE503CU Elite Solar Green Dot Micro Sight. Constructed with the company's latest Green LED technology, the Holosun HE503CU Elite Solar Green Dot Micro Sight is designed to minimize battery usage while providing a solid, bright aiming point for users. This allows the sight to have a battery life of up to five years on a since CR2032 battery. In addition, the built-in solar panel even allows battery-free operation in the right conditions. Adjustment value: 1/2 MOA Features 12 brightness settings 50 Mfg: Holosun