The HS503CU is a 20mm micro sight designed for rifle and carbine applications. HS503CU features Holosun’s Solar Failsafe technology and our Multi-Reticle System (MRS) which includes a 2MOA dot and a 65 MOA Circle. Holosun’s Red Super LED allows for up to 50k hour battery life with 10 daylight and 2 night vision compatible reticle intensity settings.
The HS503CU housing is made from 6061 aluminum and includes both a lower 1/3 co-witness mount (1.63”) and a low mount (.75”) for low-comb height rifle applications. Additional features include Shake Awake technology, rubber lens covers, and a side battery for the 2032 battery. HS503CU is a versatile sight for users of all levels.
MRS:2 MOA Dot; 2 MOA Dot & 65 MOA Circle
Up to 50,000 Hours Battery Life (Setting 6)
12 Brightness Setting: 10 DL & 2 NV Compatible
Convenient Tray Battery Compartment
Parallax-free & Unlimited Eye Relief
Reticle | 2 MOA Dot & 65 MOA Circle |
Light Wavelength | 650nm |
Reticle Color | Red |
Parallax Free | Yes |
Unlimited Eye Relief | Yes |
Magnification | 1x |
Multi-Coatings | Yes |
Power Source | Solar & Battery |
Battery Type | CR2032 |
Battery Life (Hours) | 50000 |
Brightness Setting | 10 DL&2 NV |
Window Size | 20mm Diameter |
Dimension (in) | 2.6×1.43×1.6 |
Weight (oz) | 3 |
Housing Material | 6061 T6 Aluminum |
Surface Finish | MAO |
Adjustment per Click | 0.5 MOA |
W&E Travel Range | ±50 MOA |
Storage Temperature | -40℃~70℃ |
Working Temperature | -30℃~60℃ |
Submersion | IP67 |
Vibration | 1000G |
Lower 1/3 Cowitness Mount
Low Profile Mount
T10 L Key
Rubber Cover
User Manual
CR2032 Battery
Lens Cloth