Primary Arms Classic MRSc Features The Primary Arms Classic MRSc projects a daylight bright 3 MOA red dot across 10 total illumination settings giving shooters fine control over brightness in everything from a dim room to bright outdoor light. Autolive technology senses motion and activates the sight instantly while powering down after a period of stillness extending battery life without requiring the shooter to remember a manual switch. The 6061 aluminum housing is hardcoat anodized for a durable scratch resistant finish that holds up to holster wear and daily carry. Fully multicoated lenses resist fogging and scratching keeping the sight picture clear through repeated presentations. Built around the RMSc footprint the Classic MRSc mounts directly to a wide range of milled slides and adapter plates giving it broad compatibility across today s most popular micro compact and compact carry pistols. Its 21mm lens is intentionally smaller than Primary Arms mini footprint sights trimming the optic s profile so it does not overhang the slide on narrower pistols. A bottom loaded CR2032 battery provides up to 40 000 hours of life on the medium setting meaning years of service between changes. At just 0.56 oz the Primary Arms Classic MRSc adds virtually no weight to a carry pistol while delivering a fast reliable red dot for personal defense. Primary Arms Classic MRSc Specifications Manufacturer: Primary Arms Optics Model: Classic MRSc Type: Red Dot Sight Reticle: 3 MOA Red Dot Material: Aluminum Color: Black Finish: Hardcoat Anodized Objective: 21mm Brightness Settings: 10 Settings Battery Size: CR2032 Battery Life: 25 001-50 000 hrs Optic Coating: Fully Multi Coated Weight: 0.56 oz Click Value: 1 MOA Available At: GrabAGun