Holosun.ca - HE510C-GR,Holosun HE510C-GR Solar Open Reflex Sight - Green 2 MOA Dot,Holosun Elite HE510C-GR Open Reflex Green Dot Sight – 65 MOA,Amazon.com : HOLOSUN Green Circle Dot, FDE, Solar Failsafe,Holosun HE510C-GR Elite Green Dot Sight FDE | Angstadt Arms,