Holosun HE403B-GR Circle Green Dot Sight

Holosun HE403B-GR Circle Green Dot Sight The HE403B-GR is a 20mm micro optical sight designed for rifle and carbine applications. Features include 12 brightness settings, Holosun’s Green Super LED with up to 50k hours battery life, and 2 MOA Dot. Lower 1/3 Cowitness Mount Rubber Cover Powered by CR2032 Battery