Requested by many handgun hunters for its weight and durability the Ultradot Gen 2 is now available in a 30mm tube size. 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. Available in Black Matte or Silver Satin Finish. This sight comes complete with a battery polarizing filter tube extension mounting rings and hex wrench. - Ultradot Gen 2 30mm Technical Specifications - Tube Diameter: 30mm (1.2 inches) - Windage/Elevation Adjustments: 1 MOA per click - Dot Size: 2 MOA - Dot Brightness Adjustment: 11 Settings / Click - Field of View: Unlimited - Length: 133mm (5.2) Inches - Battery: 3v Lithium CR2032 - Battery Life: User dependent - Weight: 130g (4.6 oz) - Parallax Free @ 50m (55 yards)