NcStar tube-style sights with a safe LED red dot have a 30mm objective and a black anodized aluminum body. They feature a seven-position rheostat knob for multiple brightness settings. These red dot sights come with a battery, lens covers, mounting tool and integrated weaver-style mount.

LED (Light Emitting Diode) 100% Safe for the Eyes
Unlimited Eye Relief for flexible mounting
30mm Objective lens
Seven Position Rheostat Knob for Multiple Brightness Settings
Integrated Weaver style mount
Powered by 3 Volt Lithium Batteries (CR2032) included
Includes Extra Battery
Black Anodized Aluminum Body