BeamQ Tactical Red Dot Sight Scope - Red Dot Optics Scope Airsoft Shotgun Rifle Objective Diameter: 0.79'' Exit Pupil: 2.4'' Length: 2.6'' Tube Diameter: 1.2'' Material: Black Anodized Aluminum Body Dot Color: Red Green Dot (LED, 100% safe for the eyes) Rail Type: 0.79'' Weaver rail