The 512C Enclosed Reflex Sight is built with an aluminum housing, wide field of view and a tool-less battery compartment. This reflex red dot optic equipped with Holosun's Multi-Reticle System (MRS) that includes three reticle choices. A 65 MOA circle dot reticle with the option of switching to a 2MOA dot only and for quick target acquisition, a 65 MOA circle only. The 512C battery life lasts up to 5-years and is equipped with Holosun's Advanced Solar Fail-safe power engine, giving the operator indefinite run time. This optic was designed to take anything you and your environment can throw at it and give back the innovations and performance you need to finish any job.