Last update on August 18, 2022 // Source: Amazon API
Rifle Scope Product Details
Visionking Rifle Scope 3-9×42 FL Riflescope 30 mm Illuminated Red/Green Mil dot Riflescopes Color Black
The Visionking 3-9×42 riflescope was ever exhibited in 2009 IWA & Outdoorclassics. Precision multi-coated optics are the distinguishing feature of the Visionking tactical riflescope line; multicoated lenses and 30 mm tube offer the clearest view for easy target acquisition in both bright and low light situations. Both waterproof and fog proof, the nitrogen filled, elevation and focusing adjustment knobs for easy adjustment in the field,it is suitable for all kinds of weather.
Objective Lens Diameter (mm): 42
Ocular Lens Diameter (mm): 37
Field of View (ft/100yads): 42-14
Field of View (m/100m): 14-4.6
Exit Pupil (mm): 14-4.67
Eye Relief (inch): 4.4-3.55
Reticle: Glass-etched Illuminated
Diopter Regulation (degree): 3-2
Click Value (inch): 0.25
Tube Diameter (inch): 1.18
Water Resistance: Yes
Fog Resistance: yes
Battery:CR2032 3V(No include)
Shock Resistance: 1200G
Weight (g): 1000
Length (mm): 445
Rifle Scope Product Features
Water and fogproof,Shockproof
About the Visionking Manufacturer
Visionking is a premium manufacturer for weapon scopes, optics, mounting solutions, and other accessories used for guns like rifles and long guns. They design and supply their products using building materials which are long lasting and resilient. This includes the Visionking Rifle Scope 3-9×42 FL Riflescope 30 mm Illuminated Red/Green Mil dot Riflescopes Color Black by Visionking. For additional shooting items, visit their site.
Rifle scopes enable you to specifically aim a rifle at different targets by lining up your eye with the target over a distance. They accomplish this through magnifying the target by using a set of lenses inside the scope. The scope’s alignment can be adjusted for the consideration of numerous environmental aspects like wind speed and elevation increases to account for bullet drop.
The scope’s purpose is to help the shooter understand precisely where the bullet will land based upon the sight picture you are viewing through the optic as you line up the scope’s crosshair or reticle with the intended target. The majority of modern-day rifle scopes have about 11 parts which are found inside and outside of the scope. These optic pieces consist of the rifle scope’s body, lenses, windage turrets or dials, objective focus rings, and other parts. Learn about the eleven parts of optics.
The Varieties of Rifle Scopes
Rifle scopes can be either “first focal plane” or “second focal plane” type of optics. Picking the finest type of rifle optic is based around what type of shooting you plan to do.
First Focal Plane Optics
Focal plane scopes (FFP) include the reticle in front of the magnification lens. These kinds of scopes are helpful for:
- Quick acquisition, far away types of shooting
- Shooting circumstances where computations are minor
- Experienced shooters who understand their target “hold over” as well as “lead” ratios for their long guns
- Shooters who don’t mind the reticle is enlarged and requires more visual eyesight area than a SFP reticle
About Second Focal Plane Optics
Second focal plane scopes (SFP) include the reticle behind the magnifying lens. This induces the reticle to stay at the very same size in relation to the quantity of zoom being used. The final result is that the reticle measurements shift based on the zoom chosen to shoot over longer distances due to the fact that the reticle measurements represent different increments which fluctuate with the zoom. In the FFP illustration with the SFP glass, the 5x “zoom” one hundred yard tick reticle measurement would be 1/5th of the non “zoom” tick. These kinds of optics are useful for:
- Long distance styles of shooting where shooters have extra time to make ballistic estimations
- Shooting where most of the shots happen within much shorter ranges and proximities
- Shooters who select a clearer optic sight picture without space taken up by the bigger FFP reticle
Zoom for Rifle Optics
The level of scope zoom you need depends upon the form of shooting you desire to do. Practically every style of rifle scope gives some amount of magnification. The volume of magnification a scope offers is determined by the size, density, and curves of the lens glass within the rifle scope. The magnification of the optic is the “power” of the glass. This denotes what the shooter is aiming at through the scope is magnified times the power aspect of what can normally be seen by human eyes.
Fixed Single Power Lens Rifle Optics
A single power rifle optic comes with a zoom number designator like 4×32. This suggests the zoom power of the scope is 4x power while the objective lens is 32mm. The magnification of this kind of optic can not change considering that it is a set power scope.
Adjustable Power Lens Rifle Glass Facts
Variable power rifle scopes can be modified between magnified levels. The power adjustment is achieved by using the power ring part of the scope near the back of the scope by the eye bell.
Rifle Optic Power Level and Ranges
Here are some recommended scope powers and the ranges where they could be efficiently used. Bear in mind that high power optics will not be as effective as lower powered glass due to the fact that too much zoom can be a detractor. The exact same concept relates to longer distances where the shooter needs to have increased power to see where to best aim the rifle.
Details on Lens Finishing
All state-of-the-art rifle optic lenses are coated. Lens finishing is an important aspect of a shooting system when looking at high end rifle optics and scope systems.
HD Versus ED Lenses
Some scope makers will also use “HD” or high-definition glass coverings which employ different procedures, rare earth compounds, polarizations, and components to draw out a wide range of color ranges and viewable target visibility through lenses. This high-definition finish is often used with higher density lens glass which reduces light’s potential to refract through the lens glass. Some scope corporations use “HD” to refer to “ED” indicating extra-low dispersion glass. ED handles how colors are represented on the chroma spectrum and the chromatic difference or aberration which is similarly called color distortion or fringing. Chromatic aberration is often noticeable around objects with hard shapes as light hits the object from various angles.
Single Finishing Versus Multi-Coating for Scopes
Different optic lenses can even have different finishings applied to them. All lenses normally have at least some kind of treatment or covering applied to them before they are used in a rifle scope or optic assembly. Since the lens isn’t just a raw piece of glass, they require performance enhancing coatings. It is part of the carefully tuned optic. It requires a coating to be applied to it so that the lens will be efficiently usable in lots of types of environments, degrees of sunshine (full light VS shaded), and other shooting conditions.
Single covered lenses have a treatment applied to them which is typically a protective and improving multi-purpose treatment. This lens treatment can protect the lens from scratches while reducing glare and other less beneficial things experienced in the shooting environment while sighting in with the scope. The quality of a single layered lens depends on the scope developer and how much you spent paying for it. Both are indications of the lens quality.
Some scope manufacturers likewise make it a point to specify if their optic lenses are coated or “multi” covered. This indicates the lens has several treatments applied to the surfaces of the glass. If a lens receives several treatments, it can establish that a producer is taking several steps to combat different natural aspects like an anti-glare covering, a scratch resistant anti-abrasion coating, followed by a hydrophilic coating. This also doesn’t necessarily imply the multi-coated lens is better than a single layered lens. Being “better” depends upon the maker’s lens treatment techniques and the quality of materials used in creating the rifle scope.
Hydrophobic Lens Coatings
Water on a lens does not help with keeping a clear sight picture through a scope at all. Lots of top of the line and high-end optic makers will coat their lenses with a hydrophilic or hydrophobic anti-water finish.
Glass Installing Alternatives
Installing options for scopes can be found in a few choices. There are the basic scope rings which are separately mounted to the optic and one-piece mounts which cradle the scope. These different types of mounts also normally are made in quick release variations which use manual levers which allow rifle shooters to quickly install and remove the scopes.
Hex Key Rifle Glass Ring Mounting Solutions
Basic, clamp design mounting scope rings use hex head screws to install to the flattop style Picatinny scope mounting rails on the tops of rifles. These varieties of scope mounts use a pair of individual rings to support the optic, and are normally constructed from 7075 T6 billet aluminum which are created for long distance precision shooting. This kind of scope mount is excellent for rifle systems which require a long lasting, rock solid mount which will not move no matter just how much the scope is moved about or abuse the rifle takes. These are the type of mounts you really want to have for a specialized scope setup on a reach out and touch someone hunting or sniper competition long gun which will almost never need to be altered or recalibrated. Blue 242 Loctite threadlocker can also be used on the scope mount screws to keep the hex screw threads from wiggling out after they are mounted safely in place. An example of these rings are the 30mm style made by the Vortex Optics company. The set usually costs around $200 USD
Quick-Release Cantilever Rifle Glass Rings
These kinds of quick-release rifle scope mounts can be used to quickly attach and detach a scope from a rifle. A wide range of scopes can also be swapped out if they all use a complementary designed mount. The quick detach design is CNC machined from anodized 6061 T6 aluminum and the mounting levers fasten solidly to a flat top style Picatinny rail. This lets the scope to be sighted in while on the rifle, removed from the rifle, and remounted while maintaining accuracy. These kinds of mounts come in beneficial for shooting platforms which are moved a lot, to take off the glass from the rifle for protection, or for sight systems which are used in between several rifles. An example of this mount style is the 30mm mount designed by the Vortex Optics brand. It typically costs around $250 USD
Rifle Glass Tube Sealing and Gas Purging
Moisture inside your rifle scope can mess up a day of shooting and your pricey optic by causing fogging and producing residue inside of the scope tube. A lot of scopes prevent moisture from going into the scope tube with a system of sealing O-rings which are water resistant.
Rifle Glass Gas Purging
Another element of preventing the buildup of moisture inside of the rifle optic tube is filling the tube with a gas like nitrogen. Given that this area is already taken up by the gas, the optic is less impacted by temp shifts and pressure differences from the outdoor environment which could possibly permit water vapor to permeate in around the seals to fill the void which would otherwise exist. These are good qualities of a decent rifle scope to seek out.