Last update on February 5, 2023 // 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 with Mount Ring
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
Objective Lens Diameter (mm): 42
Field of View (ft/100yads): 42-14
30mm Tube Illuminated
About the Visionking Brand
Visionking is a premium producer for rifle scopes, optics, mounts, and other components used for firearms like rifles and long guns. They innovate and build their products making the most of building materials which are resilient and long lasting. This includes the Visionking Rifle Scope 3-9×42 FL Riflescope 30 mm Illuminated Red/Green Mil dot Riflescopes Color Black with Mount Ring by Visionking. For additional shooting products, visit their site.
What You Need to Know About Optics
Rifle scopes enable you to exactly align a rifle at various targets by lining up your eye with the target at range. They accomplish this through magnifying the target by utilizing a set of lenses inside the scope. The scope’s alignment can be adjusted to take into account different environmental aspects like wind speed and elevation increases or decreases to make up for bullet drop.
The scope’s purpose is to understand precisely where the bullet will hit based on the sight picture you are viewing using the optic as you line up the scope’s crosshair or reticle with the intended target. Many contemporary rifle scopes have around 11 parts which are found within and outside of the scope. These parts include the rifle scope’s body, lenses, elevation turrets or dials, objective focus rings, and other elements. Learn about the eleven parts of rifle glass.
Rifle Optic Types
Rifle scopes can be either “first focal plane” or “second focal plane” type of scopes. Picking the best type of rifle optic is based on what type of shooting you plan on doing.
First Focal Plane Glass
First focal plane glass (FFP) come with the reticle ahead of the magnifying lens. This causes the reticle to increase in size based upon the extent of zoom being used. The outcome is that the reticle measurements are the same at the enhanced range as they are at the non amplified range. For example, one tick on a mil-dot reticle at 100 yards without “zoom” is still the corresponding tick at 100 yards using 5x “zoom”. These types of scopes work for:
- Quick acquisition, long distance types of shooting
- Shooting scenarios where calculations are minor
- Experienced shooters who recognize their aim point “hold over” and also “lead” ratios for their firearms
- Shooters who don’t mind the reticle is bigger and uses up more visual eyesight space than a SFP reticle
Second Focal Plane Glass Info
Second focal plane scopes (SFP) include the reticle behind the zoom lens. This induces the reticle to remain at the exact same overall size in connection with the quantity of magnification being used. The result is that the reticle measurements adjust based upon the zoom employed to shoot over longer distances since the markings present different increments which change with the magnification. In the FFP illustration with the SFP scope, the 5x “zoom” one hundred yard tick reticle measurement would be 1/5th of the non “zoom” tick measurement. These types of scopes are handy for:
- Long distance styles of shooting where shooters have additional time to make ballistic computations
- Shooting where most of the shots take place within shorter proximities and ranges
- Shooters who prefer a clearer optic picture with less space taken up by the larger size FFP reticle
Magnification for Scopes
The quantity of scope zoom you need depends upon the kind of shooting you choose to do. Almost every kind of rifle glass supplies some level of magnification. The level of magnification a scope gives is identified by the diameter, density, and curves of the lens glass inside of the rifle optic. The magnification level of the optic is the “power” of the glass. This indicates what the shooter is checking out through the scope is magnified times the power element of what can typically be seen by human eyes.
Info on Fixed Single Power Lens Scopes
A single power rifle scope will have a zoom number designator like 4×32. This suggests the zoom power of the scope is 4x power and the objective lens is 32mm. The zoom of this type of scope can not change considering that it is a set power scope.
Adjustable Power Lens Glass
Variable power rifle scopes can be changed between magnification power levels. These types of scopes will list the zoom level in a configuration such as 2-10×32. These numbers imply the zoom of the scope could be adjusted in between 2x and 10x power. This additionally incorporates the powers in-between 2 and 10. The power shift is accomplished by employing the power ring part of the scope near the back of the scope by the eye bell.
Power Levels and Range
Here are some recommended scope power settings and the distances where they may be efficiently used. High power scopes will not be as effective as lower magnification level glass considering that too much zoom can be a bad thing. The same concept relates to extended distances where the shooter needs to have enough power to see exactly where to properly aim the rifle.
Optic Lens Coating
All state-of-the-art rifle glass lenses are coated. Lens finishing is a crucial element of a shooting platform when buying high end rifle optics and scope systems.
HD Versus ED Optic Lens Coatings
Some optic producers additionally use “HD” or high-definition lense finishes that use various processes, rare earth compounds, polarizations, and components to extract a wide range of color ranges and viewable definition through lenses. This high-definition covering is typically used with more costly, high density lens glass which reduces light’s ability to refract through the lens glass. Some scope corporations use “HD” to describe “ED” indicating extra-low dispersion glass. ED handles how certain colors are presented on the chromatic spectrum and the chromatic aberration or deviance which is also called color distortion or fringing. Chromatic aberration may be noticeable around items with well defined outlines as light hits the item from certain angles.
Single Rifle Scope Lens Finishing Versus Multi-Coating
Various optic lenses can also have different coverings applied to them. All lenses normally have at least some type of treatment or coating applied to them before being used in a rifle scope or optic.
Single coated lenses have a treatment applied to them which is typically a protective and boosting 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 covered lens depends upon the scope producer and the amount you spent paying for it. Both the make and cost are indications of the lens quality.
Some scope producers likewise make it a point to specify if their optic lenses are covered or “multi” coated. This indicates the lens has had several treatments applied to them. If a lens receives multiple treatments, it can establish that a producer is taking numerous steps to fight different environmental elements like an anti-glare coating, a scratch resistant anti-abrasion covering, followed by a hydrophilic finish. This also doesn’t necessarily imply the multi-coated lens will perform much better than a single covered lens. Being “better” hinges on the manufacturer’s lens treatment techniques and the quality of products used in building the rifle scope.
Hydrophobic Lens Coverings
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 military grade scope makers will coat their lenses with a hydrophilic or hydrophobic coating.
Optic Installation Alternatives
Mounting solutions for scopes are available in a couple of choices. There are the standard scope rings which are separately mounted to the scope and one-piece scope mounts which cradle the scope. These various types of mounts also usually can be found in quick release versions which use manual levers which allow rifle operators to rapidly mount and remove the scopes.
Hex Key Scope Ring Mounting Solutions
Standard, clamp style mounting scope rings use hex head screws to position to the flattop design Picatinny scope mount rails on the tops of rifles. These forms of scope mounts use two separate rings to support the scope, and are normally made from 7075 T6 billet aluminum or similar materials which are created for long distance precision shooting. This form of scope mount is exceptional for rifles which are in need of a durable, rock solid mount which will not shift despite how much the scope is moved or jarring the rifle takes. These are the design of mounts you should get for a devoted optics system on a far away hunting or tournament rifle which will pretty much never need to be changed or adjusted. Blue 242 Loctite threadlocker can also be used to stop the hex screw threads from wiggling out after they are installed safely in position. An example of these rings are the 30mm type made by Vortex Optics. The set typically costs around $200 USD
Quick-Release Cantilever Rifle Optic Rings
These kinds of quick-release rifle scope mounts can be used to rapidly remove a scope from a rifle and reattach it to a different rifle. If they all use a similar design mount, multiple scopes can also be switched on the range. The quick detach design is CNC machined from anodized 6061 T6 aluminum and the mounting levers attach nicely to a flat top design Picatinny rail. This lets the scope to be sighted in while on the rifle, removed from the rifle, and remounted while preserving precision. These kinds of mounts are useful and convenient for shooting platforms which are hauled around a lot, to take off the scope glass from the rifle for protection, or for aiming systems which are utilized in between multiple rifles. An example of this mount style is the 30mm mount designed by the Vortex Optics manufacturer. It usually costs around $250 USD
Info on Scope Tube Sealing and Gas Purging
Wetness inside your rifle scope can mess up a day of shooting and your costly optic by causing fogging and developing residue inside of the scope tube. The majority of scopes avoid wetness from entering the scope tube with a system of sealing O-rings which are water resistant.
Gas Purged Rifle Optic Tubes
Another element of avoiding the buildup of wetness within the rifle scope’s tube is filling the tube with a gas like nitrogen. Considering that this area is already taken up by the gas, the glass is less impacted by temp changes and pressure variations from the external environment which may possibly allow water vapor to leak in around the seals to fill the vacuum which would otherwise be there. These are good qualities of a decent rifle scope to look for.