Overview Reviews Product Description The HS403C is a 20mm micro optical sight designed for rifle and carbine applications. Features include Solar Failsafe, 12 brightness settings, Holosuns Green Super LED with up to 50k hour battery life, and 2 MOA Dot. Product Videos Custom Field Product Reviews Write a Review Write a Review × Holosun Hs403c Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *