
The HE503CU-GR is a 20mm micro sight designed for rifle and carbine applications. HE503CU-GR features Holosun’s Solar Failsafe technology and our Multi-Reticle System (MRS) which includes a 2MOA dot and a 65 MOA Circle. Holosun’s Green Super LED allows for up to 50k hour battery life with 10 daylight and 2 night vision compatible reticle intensity settings.
The HE503CU-GR 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. HE503CU-GR is a versatile sight for users of all levels.
 
						 Solar Failsafe™
									Solar Failsafe™
								 Shake Awake™
									Shake Awake™
								 Multiple Reticle System
									Multiple Reticle System
								 Super LED
									Super LED
								 Multilayer Reflective Glass
									Multilayer Reflective Glass
								Solar Failsafe Technology is one of many innovations featured on solar-equipped Holosun optics. With Solar Failsafe, if your battery fails you always have a backup power source when natural or artificial light is available. Solar Failsafe is activated while in Auto Mode where reticle intensity is automatically adjusted based on the amount of light the solar cell receives. In brighter conditions you have a brighter reticle and in lower-light conditions the reticle will step down in intensity to match any lighting conditions. On models equipped with a super capacitor, it is possible to run the optic, indefinitely, in daytime and night conditions, by maintaining a charge through the Solar Failsafe System all without a battery.
 
						| 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 |