Ultradot 30mm Gen 2 Red Dot Sights 2 MOA Dot Black 30mm UD30B G2. This provides a larger field of view and more light. Only 133mm (5.2 inches) long and weighs just 130g (4.6 oz). 2 MOA dot size. Click adjustable brightness control. Specifications for Ultradot 30mm Gen 2 Red Dot Sights: Manufacturer: Ultradot Reticle: 2 MOA Dot Brightness Settings: 11 Adjustment Click Value: 1 MOA Emitter Type: Enclosed Parallax: 50 m Battery Type: Lithium Metal CR2032 Length: 133 mm Weight: 130 g Tube Diameter: 30 mm Red Dot Sights-Footprint: Not Applicable Package Contents: Ultradot 30mm Gen 2 Red Dot Sights Battery Polarizing Filter Tube Extension Mounting Rings Hex Wrench Ultradot UD30B G2: 30mm Gen 2 Red Dot Sights 2 MOA Dot Black 30mm