Trijicon produces battle-proven aiming systems that deliver rapid target acquisition and increased hit potential under any lighting conditions. Their self-luminous aiming systems empower you to execute any shot with complete confidence in bright light, low light or no light at all.Some hunters need to take the time-tested performance of the venerable 3-9x40 up a notch or two, so Trijicon proudly presents the impressive 2.5-10x56 AccuPoint Riflescope. With this scope you'll realize a significant improvement in twilight performance with a moderately improved range of magnification - the stout 30mm main-tube provides a notable increase in stability and durability. The reticle is illuminated via Trijicon's proprietary tritium/fiber optic technology to ensure your ability to establish your point of aim under all conditions.To use a riflescope with your firearm, you'll need a mounting base and mounting rings in addition to the scope itself. Bases attach to your firearm and rings attach to your scope. Proper spacing of the rings, as well as the ring height should be considered to ensure a proper line of sight can be established. This will maximize the value of your investment, and enhance your shooting experience. It should be noted that in many mounting applications, a professional gunsmith's skills will be needed for proper installation.30mm Main-Tube6061-T6 Aluminum main-tube is waterproof to 10'Mil-Spec FinishType III hard anodized per MIL-A-8625 , Class 2 dull - non reflectiveMulti-Layer Coated LensesProvide superior clarity, zero distortion, flare/glare reductionFiber Optics and Tritium IlluminationProprietary battery-free technology provides a vivid aiming point without the need for failure-prone batteriesDual-Illuminated Mil-Dot w/Green Dot ReticleThe Mil-Dot reticle enables long range distance calculations. A series of dots upon the cross hairs gives the shooter the ability to judge bullet drop and the proper hold over for accurate long range shot placement.Trijicon's proprietary tritium/fiber-optic illumination technology places a brilliant green dot at the intersection of the stadia.This scope has the reticle positioned in the rear or second focal plane so it will not magnify when the scope is zoomed to high power. This leaves the sight picture unobstructed for a clear view at all times. The scope must be set to 10x magnification to use the Mil-Dot system.Magnification2.5-10xObjective Lens Diameter56mmReticleMil-Dot w/Green DotMain-Tube Diameter30mmLinear Field of View2.5x: 37.6' @ 100 yd / 12.5 m @ 100 m10x: 10.1' @ 100 yd / 3.4 m @ 100 mExit Pupil Diameter2.5x: 16.3 mm10x: 5.6 mmEye Relief2.5x: 4.1" 104mm10x: 2.8" 71mmFilter SizeProprietary threadImpact Point Correction1/4 MOAMaximum Windage/Elevation AdjustmentWindage: 40 MOAElevation: 40 MOAWeatherproofingWaterproof to 10.0' / 3.1 mBattery / RuntimeNot applicableDimensionsLength: 13.8" / 35 cmWeight20.7 oz / 627 g