Specifications Construction: Metal Objective Lens: 32 Mm Magnification: 2X-6X Illumination: Red / Green Intensity Levels: 5 Eye Relief: 75-95 Mm Tube Diameter: 25.4 Mm Field Of View: 15.71-41.96 @ 100 Yards Reticle: Range Finder Optical Coating: Blue Shockproof: Yes F.O.A. Adjustable: Yes Water And Fog Proof (Nitrogen Purged): Yes Rail Compatibility: 20Mm Picatinny/Weaver Weight: 362G Length: 210 Mm Color: Black Features Incredibly Tough Tempered Metal Alloy Manufacturing Proves To Outlast And Endure In The Field Against The Elements And Debris. Built-In Scope Shade To Reduce Glare And Sun Reflection Compatible With 20Mm Picatinny/Weaver Rails Integrated Lens Covers Reticle Adjustable For Windage And Elevation Large Adjustment Dials To Quickly Mount To Your Rifle