The HS503R is a small compact micro red dot optic that features Holosun's new Rheostat Dial to adjust brightness settings. Employing our LED technology, The HS503R can achieve "constant on" battery life of up to 100,000 hours on medium setting. This optic features Holosun's proprietary Multi-reticle System (MRS) giving the user 2 reticles to choose from.
New rotary control for faster operation and visual brightness indicator
Advanced technology LED allows up to 100,000 hours of operation on one CR2032 battery