Holosun HS403B 20mm Micro Red Dot Sight - 2 MOA Red Dot
The Holosun HS403B is a compact 1x 20mm micro red dot built around a 2 MOA dot reticle with 12 brightness settings (10 daylight and 2 night-vision compatible). Features include Shake Awake technology, a side-mounted CR2032 battery tray, and parallax-free operation with unlimited eye relief.
This optic is mounted on an installed Picatinny mount.