Holosun HS503CU-Red, 2MOA Dot Only or a 2MOA Dot with 65MOA Circle, Solar With Internal Battery, Includes Low and Lower 1/3 Co-Witness Mount, Housing Shrouds for Windage and Elevation Turrets, Fits 1913 Picatinny Rail, Black
 
The HS503CU is a new micro red dot optic equipped with a 65 MOA circle dot reticle with the option of switching to a 2MOA dot only. Holosun's highly efficient light emitting diodes and solar panels allow Holosun solar optics to run without a battery in many lighting conditions. Additionally, the back-up battery lasts up to 5-years on the dot and up to 2 years on the circle dot. The U signifies a housing design that shrouds the windage and elevation turrets on two sides.