The LM-MRDS (LaserMax-Micro Red Dot Sight) is a ultracompact sight for mourning on RMSc optics ready pistols. The housing is constructed of aircraft grade 7071 aluminum. The sight is ideal for conceal carry style pistols. The LM-MRDS comes equipped with an industry first external light sensor which automatically adjust the brightness of the red dot based on ambient lighting conditions. A picatinny mount, mounting hardware and battery are included.Features:External Light Sensor for Auto Brightness Management10,000 hour run timeBrightness settings: 8 Day / 2 NightShake to awakeReticle: 4 MOA Red DotWinadage/Elevation Adjustment: 1 click = 1 MOAOperation Modes: Auto brightness or manual adjustRMSC mounting footprintPower Source: CR2032, included