Holosun HS503CU Micro Circle-Dot Red Dot + HM3X 3X Flip-to-Side Magnifier Combo
This setup pairs the HS503CU 20mm micro red dot with the HM3X fixed 3X magnifier for a compact, fast 1x sight picture with on-demand magnification. The HS503CU features Solar Failsafe and Shake Awake, Holosun’s Multi-Reticle System (2 MOA dot and 65 MOA circle), and 10 daylight plus 2 night-vision compatible brightness settings.
The HM3X magnifier uses an ambidextrous flip-to-side QD mount, diopter adjustment for focus tuning, and windage/elevation alignment adjustments to match the magnifier to your primary optic.