DescriptionModel Number : 3-9x40 Airsoft Optical Rifle Scope SightType : RIFLEOrigin : Mainland ChinaMagnification : 3-9xWeight : 275g,275gLength : 205mm,7.48" /190mmObjective Diameter : 1.57" /40mmTube Diameter : 1" /25.4mmEye relief : 2.3"-2.8"/58.4mm-68.6mmScope Mount : 0.79" /20mmAdjustment method : ordinary manual adjustmentCoating method : anti-reflection blue filmSeismic or not : yesModerately adjustable or not : yesNitrogen filled or not / waterproof and anti-fog : yesTactical Hunting Optical 3-9x40 Airsoft Optical Rifle Scope Sight with Rail Mount Telescope Crosshair Reticle Sight Sniper ScopesFeatures:High-quality materials and craftsmanship- The Rifle Scope is made of high-strength aluminum alloy. Completely sealed and 100% nitrogen filled makes it fog and rain proof. Scratch-resistant coating protects exterior lenses from scratches, oil and dirt.Myopia users do not need to wear glasses to use- Constructed with the Kellner eyepiece allows for extra field of view and makes it be able to eliminate of most of image aberrations. And the ocular is built with dioptric adjustment lens that can provide nearsighted and farsighted users a clear viewfinder image without the use of eyeglasses .Creating the parallax free view- Creating the parallax free view from 15 yards out to infinity.Focus is more precise and accurate- The focusing cam is machined precisely . The focus component with moderate damping allows it focus fast and accurately.Multilayer coating- Fully multicoated glass provides over 90% light transmission, brilliant images and exceptional color contrast.Non-traditional design improves experience- The Scope is only 7.48" (190mm), it is easy to carry and operate. It has a crosshair instead of traditional front sight and gap, and this can obviously increase aiming speed, accuracy.Specifications:- Magnification: 3-9x-Weight: 275g-Length: 205mm- Objective Diameter: 1.57" (40mm)- Tube Diameter: 1" (25.4mm)- Eye relief: 2.3"-2.8"(58.4mm-68.6mm)- Weight: 275g- Length: 7.48" (190mm)- Scope Mount: 0.79" (20mm)- Adjustment method: ordinary manual adjustment-Coating method: anti-reflection blue film-Seismic or not: yes-Moderately adjustable or not: yes-Nitrogen filled or not / waterproof and anti-fog: yesPackage includes:- 1 x 3-9x40 Compact Scope- 1 x Cleaning Cloth- 2 x Scope Mounts for 20mm/11mm Rail- 1 x Instruction Manual- 1 x Screwdriver- 1 x Packing BoxInstallation Notes:1 grid is =1/4moa=0.635cm, a total of 60 grids, that is 60*0.635cm=38.1cm separated from the middle is 19.05cmYou can move up to 30 grids horizontally to the left, which is 19.05cm = 7.5in maximumThe maximum horizontal movement to the right can be 30 grids, which is the maximum value of 19.05cm=7.5inIt can move up to 30 grids vertically, which is the maximum value of 19.05cm=7.5inVertically downward can move up to 30 grids, which is the maximum value of 19.05cm=7.5in