Ultra Dot Matchdot II Red Dot- 30mm Tube, Matte BlackFeaturing a full length 30mm tube with a screw-on sunshade/extender, The Matchdot II is part of the New Ultradot 6 Series. Built for serious competitors, this new and improved sight has 4 dot sizes (2,4,6 and 8 MOA) plus two reticle patterns for added flexibility. 11 brightness settings. A target style Bullet Drop Compensating elevation knob dials in elevation at any distance. The following accessories are included: 30mm mounting Rings, Lens Covers, Tube Extension, Hex Wrench, Polarizing Filter and Battery.