TruGlo 1x30 Red Dot Sight Matte Black TG. The illuminated ring of these Red Dot Sights represents a 24" circle at 30 yards. Plus a detachable extended sunshade eliminates glare from the front lens. Specifications for TruGlo Red Dot Sights TG8030GB: Manufacturer: TruGlo Color: Black Finish: Matte Magnification: 1 x Objective Lens Diameter: 30 mm Reticle: 3 MOA Dot Emitter Type: Enclosed Field of View Linear: 68 ft at 100 yds Battery Type: CR2032 Weather Resistance: Yes Length: 3.8 in Weight: 7.8 oz Magnification Type: Fixed Red Dot Sights-Footprint: Not Applicable Mount Type: Picatinny Dimensions: 10 x 7.2 x 2 in Size: 30mm Gun Rail: Picatinny Package Contents: TruGlo Red Dot Sights TG8030GB TruGlo TG-TG8030GB: 1x30 Red Dot Sight Matte Black