Holosun 407Comp [green]This red dot uses the Trijicon RMR footprint standard. Holosun HE407COMP GR 6 is a competition focused open reflex red dot designed for maximum speed, visibility, and control. With a large viewing window and a bold 6 MOA green dot, it helps you acquire targets faster and track them more naturally during dynamic shooting. Built for speed and fast transitions The large 1. 1 0. 87" window gives you a wide field of view, making transitions between targets