The Crimson Trace CT RAD Pro is a full-size open (exposed-emitter) reflex pistol red dot with a 5 MOA green dot. A recessed, fully multi-coated lens sits behind a large quick-acquisition window for a wide, clear field of view. Features: Full-size open (exposed-emitter) reflex pistol red dot 5 MOA green dot Recessed, fully multi-coated lens Large quick-acquisition window Confirm your slide's optic cut matches the CT RAD Pro footprint before ordering.