Holosun HE509T-RD Enclosed Red Dot Sight with Solar Panel
The Holosun HE509T-RD is a compact enclosed-emitter pistol red dot built around a sealed housing and a top-mounted solar panel. Controls are located on the left side, with adjustment screws for windage/elevation.
This optic presents a red circle-dot style aiming reticle and uses a side-loading battery tray design for access without removing the sight from its mount.