Description
Rifle Scope Product Details
Long Eye Relief Scope 2-7×42 Red Green llluminate Mil-dot Reticle 30mm Tube Diameter Fits Mosin Nagant 1891/30 M39 with Mount Rings
Product specification:
MAGNIFICATION2X-7X
OBJECTIVE DIAMETER42mm
TUBE DIAMETER30mm
EYE RELIEF8.5″-10.5″
EXIT PUPIL21-6MM
Click Value W/E:1/4
FOV(FEET@100YDS)14-4.6
LENGTH11.25″
Weight: 14 oz.
1 x 2-7X42 Scout scope sight
1 x Cleaning Cloth
1 x pair scope rings
1 x SEE-THRU Protective Scope Rings
Material: Aircraft Grade Aluminum Alloy
Color: Anodized matte black.
Rifle Scope Product Features
Tactical rifle scope providing crystal clear targeting at 2X-7X magnification, with a 42mm objective diameter and an eye relief of 8.5 – 10.5 Inches.
Long eye relief 2-7×42 Hunting rifle scope fits Mosin Nagant 1891/30 M39 with Red Green llluminate Mil-dot Reticle with Weaver/Picatinny ring mounts.
Fully anodized matte black,superior aircraft grade aluminium body made from one piece,Excel durability and performance with high quality military grade precision.
Multi-coated lens with improved refractive and crystal clear view,filled with nitrogen,provide water-proof,fog-proof,dust-proof,scratch-resistant.
All weather adapted and optimal rifle scope for hunting,held zero for thousands of rounds.
About the CZSM Manufacturer
CZSM is a premium company for rifle scopes, optics, mounting solutions, and other components used for guns like rifles and long guns. They create and manufacture their products by using materials which are long lasting and resilient. This includes the Long Eye Relief Scope 2-7×42 Red Green llluminate Mil-dot Reticle 30mm Tube Diameter Fits Mosin Nagant 1891/30 M39 with Mount Rings by CZSM. For additional shooting goods, visit their website.
Information Optics
Rifle scopes enable you to specifically align a rifle at different targets by lining up your eye with the target over a range. They accomplish this through zoom by using a set of lenses within the scope. The scope’s alignment can be adjusted to take into account various ecological things like wind speed and elevation increases or decreases to account for bullet drop.
The scope’s function is to help shooters understand exactly where the bullet will land based upon the sight picture you are seeing via the optic as you line up the scope’s crosshair or reticle with the intended point of impact. Many modern rifle scopes and optics have around eleven parts which are found internally and externally on the scope body. These parts consist of the rifle scope’s body, lenses, windage dials, objective focus rings, and other components. See all eleven parts of scopes.
About Rifle Glass Styles
Rifle scopes can be either “first focal plane” or “second focal plane” type of scopes. Deciding upon the best type of rifle scope depends on what type of shooting you plan to do.
Info About First Focal Plane Glass
Focal plane scopes (FFP) include the reticle in front of the zoom lens. These types of scopes are useful for:
- Quick acquisition, long distance kinds of shooting
- Shooting situations where computations are marginal
- Experienced shooters who understand their target “hold over” and “lead” equations for their long gun
- Shooters who do not mind the reticle is enlarged and requires more visual eyesight room than a SFP reticle
Second Focal Plane Optics
Second focal plane scopes (SFP) feature the reticle behind the zoom lens. In the FFP example with the SFP scope, the 5x “zoom” one hundred yard tick would be 1/5th of the non “zoom” tick measurement.
- Long distance styles of shooting where shooters have additional time to make ballistic estimations
- Shooting where most of the shots occur within much shorter ranges and distances
- Shooters who choose a clearer optic sight picture without room used up by the larger size FFP reticle
Rifle Glass Magnification
The amount of zoom a scope provides is figured out by the size, density, and curvatures of the lenses inside of the rifle scope. The zoom of the scope is the “power” of the scope.
Single Power Lens Rifle Optic Details
A single power rifle scope will have a zoom number designator like 4×32. This indicates the magnification power of the scope is 4x power and the objective lens is 32mm. The magnification of this type of optic can not fluctuate considering that it is fixed.
About Variable Power Lens Optics
Variable power rifle scopes use variable power levels. The power modification is achieved by making use of the power ring part of the scope near the back of the scope by the eye bell.
Rifle Scope Power Level and Range Correlation
Here are some suggested scope power levels and the ranges where they may be efficiently used. Remember that high power optics will not be as efficient as lower magnification level scope and optics because increased magnification can be a bad thing. The exact same idea applies to longer ranges where the shooter needs to have sufficient power to see precisely where to best aim the rifle.
Optic Lens Finishing
All modern rifle optic and scope lenses are coated. There are different types and qualities of lens coatings. Lens covering is a crucial aspect of a rifle’s setup when thinking about high end rifle optics and scope units. The glass lenses are among the most essential pieces of the scope since they are what your eye looks through while sighting a rifle in on the target. The finish on the lenses safeguards the lens exterior and even helps with anti glare from refracted daylight and color exposure.
About Lens Coatings – HD Versus ED
Some scope manufacturers also use “HD” or high-definition lens coatings which use different methods, aspects, polarizations, and chemicals to draw out various colors and viewable quality through the lens. Some scope makers use “HD” to refer to “ED” meaning extra-low dispersion glass.
Info on Single Finishing Versus Multi-Coating
Various scope lenses can also have different coverings applied to them. All lenses generally have at least some type of treatment or coating applied to them prior to being used in a rifle scope or optic assembly. This is because the lens isn’t just a raw piece of glass. It becomes part of the carefully tuned optic. It requires a coating to be applied to it so that the lens will be optimally usable in many kinds of environments, degrees of sunshine (full light VS shade), and other shooting conditions.
This lens treatment can offer protection to the lens from scratches while lowering glare and other less useful things experienced in the shooting environment while sighting in with the scope. The quality of a single layered lens depends on the scope maker and how much you paid for it.
Some scope makers similarly make it a point to define if their optic lenses are covered or “multi” coated. Being “much better” depends on the maker’s lens treatment technology and the quality of materials used in building the rifle scope.
Anti-water Lens Coatings
Water on a lens doesn’t help with preserving a clear sight picture through a scope at all. Many top of the line and high-end optic makers will coat their lenses with a hydrophilic or hydrophobic covering.
Rifle Glass Installing Choices
Mounting solutions for scopes are available in a few choices. There are the basic scope rings which are individually installed to the scope and one-piece scope mounts which cradle the scope. These different types of mounts also typically can be found in quick release variations which use manual levers which enable rifle operators to quickly install and dismount the optics.
Rifle Optic Mounts with Hex Key Rings
Standard, clamp style mounting scope rings use hex head screws to mount to the flattop style Picatinny scope mount rails on rifles. These types of scope mounts use a couple of different rings to support the optic, and are made from 7075 T6 billet aluminum which is developed for long distance accuracy shooting. This type of scope mount is wonderful for rifles which need a long lasting, sound mount which will not move no matter how much the scope is moved or abuse the rifle takes.
Rifle Glass Mounts with Quick-Release Cantilever Rings
These types of quick-release rifle scope mounts can be used to quickly attach and remove a scope from a rifle. If they all use a similar style mount, multiple scopes can often be swapped on the range. The quick detach design is CNC crafted from anodized 6061 T6 aluminum and the mounting levers attach nicely to a flat top style Picatinny rail. This permits the scope to be sighted in while on the rifle, removed from the rifle, and remounted back on the rifle while preserving accuracy. These kinds of mounts come in convenient for rifles which are carried a lot, to take off the scope from the rifle for protection, or for aiming systems which are used between multiple rifles. An example of this mount type is the 30mm mount designed by the Vortex Optics brand. It usually costs around $250 USD
Rifle Optic Tube Sealing and Gas Purging
Wetness inside your rifle optic can wreck a day of shooting and your highly-priced optic by inducing fogging and making residue inside of the scope’s tube. The majority of optics protect against moisture from entering the scope tube with a series of sealing O-rings which are waterproof. Usually, these optics can be submerged under 20 or 30 feet of water before the water pressure can push moisture past the O-rings. This should be sufficient wetness prevention for conventional use rifles for hunting and sporting purposes, unless you plan on taking your rifle on a boat and are worried about the scope still performing if it falls overboard and you can still recover the rifle.
Rifle Glass Gas Purging
Another component of preventing the buildup of moisture inside of the rifle scope tube is filling the tube with a gas like nitrogen. Since this area is currently occupied by the gas, the glass is less influenced by temperature shifts and pressure variations from the external environment which might potentially permit water vapor to leak in around the seals to fill the vacuum which would otherwise exist. These are good qualities of a good rifle scope to look for.
