The HM3XT is a Titanium bodied 3X magnifier that includes a quick release, flip-to-side mount with Absolute and Lower 1/3 Co-witness mounting solutions. The Holosun HM3XT has an adjustable diopter to dial in the desired focus and extremely clear glass. These Red Dot Sight Magnifiers feature an integrated QD mount with an optional spacer for Absolute Co-witness and Lower 1/3 Co-witness. Additional features include 2.75 of eye relief, IP67 certified water resistance, windage and elevation adjustment for precision zeroing, and a length of just 3.2". Specifications for Holosun HM3XT Magnifier: Manufacturer: Holosun Finish: Black Magnification: 3 x Eye Relief: 70 mm, 2.75 in Length: 3.2 in Weight: 11.6 oz Field of View, Linear: 37 ft at 100 yds Field of View, Angle: 7 degrees Fabric/Material: Titanium Width: 1.8 in Height: 2.5 in Color: Black Operating Temperature: -30 - 60 Celsius Exit Pupil: 7.6 mm Diopter Adjustment Range: -3 - 3 dpt Condition: New Water Resistance Level: IP67 Lens Material: Optical Glass Magnification Type: Fixed Adjustment Range: 0.5 MOA Housing/Frame Material: 6061-T6 aluminum Features of Holosun HM3XT Magnifier: Flip-to-the-side Design Outstanding Specification & Clarity Compact and Small Design Complete Titanium Housing QD Mount & Spacer included IP67 Waterproof Package Contents: Holosun HM3XT Magnifier QD Release Mount T10 L Key User Manual