Lightweight Design - Carbon Fiber Extension Bar with Dovetail Mount; .019 Blade Pins with 12" of Fiber Optics Per Pin; Interchangeable Fluorescent Peep Alignment Rings - Green Comes Installed, with Red, Yellow & Grey Included; 5-pin Housing - Laser Engraved for Precise Pine Adjustments; Second- & Third-Axis Adjustments; Multiple Mounting Positions for Elevation and Windage Adjustments; Micro Elevation and Windage Housing Adjustment with Laser-Engraved Indication Markings; Rheostat Sight Light Included; Fully Ambidextrous (Assembled for Right-Hand Operation); Fully Machined Aluminum Construction