Description
Rifle Scope Product Details
Long Eye Relief Scope 2-7×42 Rangefinder Reticle 30mm Tube Diameter Fits Mosin Nagant 1891/30 M39 with Mount Rings
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.
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.
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 Rangefinder 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 Scope Maker
CZSM is a premium manufacturer for rifle scopes, optics, mounts, and other accessories used for firearms like rifles and long guns. They style and manufacture their scopes and related products by making the most of building materials which are long lasting and durable. This includes the Long Eye Relief Scope 2-7×42 Rangefinder Reticle 30mm Tube Diameter Fits Mosin Nagant 1891/30 M39 with Mount Rings by CZSM. For more shooting products, visit their website.
About Scopes
Rifle scopes permit you to specifically align a rifle at various targets by lining up your eye with the target over a range. They accomplish this through magnification using a series of lenses within the scope. The scope’s positioning can be adjusted for consideration of different environmental things like wind and elevation increases to make up for bullet drop.
The scope’s function is to help the shooter understand precisely where the bullet will hit based on the sight picture you are seeing through the scope as you line up the scope’s crosshair or reticle with the intended point of impact. The majority of modern-day rifle scopes and optics have about eleven parts which are arranged within and outside of the optic. These scope parts consist of the rifle scope’s body, lenses, elevation dials, objective focus rings, and other parts. Learn about the eleven parts of rifle scopes.
The Styles of Rifle Scopes
Rifle scopes can be either “first focal plane” or “second focal plane” type of optics. Deciding upon the optimal type of rifle scope is based around what type of shooting you plan on doing.
Info on First Focal Plane Scopes
Focal plane scopes (FFP) feature the reticle in front of the magnification lens. This triggers the reticle to increase in size based upon the amount of magnification being used. The benefit is that the reticle measurements are the same at the magnified distance as they are at the non amplified range. One tick on a mil-dot reticle at 100 yards without “zoom” is still the exact same tick at one hundred yards by using 5x “zoom”. These types of scopes work for:
- Quick acquisition, long distance kinds of shooting
- Shooting circumstances where computations are low
- Experienced shooters who have an idea for their aim point “hold over” and also “lead” ratios for their weapon
- Shooters who do not mind the reticle is bigger and occupies more visual sight area than a SFP reticle
Second Focal Plane Glass Info
Second focal plane optics (SFP) come with 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.
- Long distance forms of shooting where shooters have more time to make ballistic computations
- Shooting where most of the shots take place within shorter proximities and ranges
- Shooters who like a clearer optic picture without room taken up by the enlarged FFP reticle
About Glass Zoom
The measure of scope magnification you need on your glass depends on the type of shooting you wish to do. Pretty much every kind of rifle scope gives some amount of magnification. The level of zoom a scope supplies is determined by the diameter, thickness, and curvatures of the lens glass inside of the rifle optic. The zoom of the scope is the “power” of the scope. This implies what the shooter is checking out through the scope is magnified times the power factor of what can generally be seen by human eyes.
Fixed Single Power Lens Rifle Glass
A single power rifle scope or optic comes with 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 change because it is a fixed power optic.
Variable Power Lens Rifle Scopes
Variable power rifle scopes can be adjusted between magnification power levels. It will list the zoom level in a configuration such as 2-10×32. These numbers indicate the zoom of the scope can be adjusted in between 2x and 10x power. This also involves the power levels in-between 2 and 10. The power adjustment is accomplished by applying the power ring part of the scope near the back of the scope by the eye bell piece.
The Power Level and Range of Scopes
Here are some recommended scope powers and the distances where they could be effectively used. Bear in mind that high magnification optics will not be as practical as lower magnification level optics and scopes because increased magnification can be a bad thing. The very same idea relates to extended distances where the shooter needs to have enough power to see exactly where to properly aim the rifle at the target.
Details on Lens Coating
All contemporary rifle scope lenses are coated. There are various types and qualities of finishings. Lens finishing can be an important element of a rifle’s setup when thinking of high end rifle optics and scope systems. The glass lenses are among the most essential pieces of the optic because they are what your eye looks through while sighting a rifle in on the target. The coating on the lenses offers protection to the lens exterior as well as assists with anti glare from excess natural light and color profiles.
HD Versus ED Lens Coatings
Some optic manufacturers additionally use “HD” or high-definition lense coverings that use different procedures, rare earth compounds, elements, and polarizations to extract various colors and viewable target visibility through the lens. This high-definition finishing is typically used with increased density glass which reduces light’s opportunity to refract by means of the lens glass. Some scope vendors use “HD” to refer to “ED” suggesting extra-low dispersion glass. ED deals with how certain colors are represented on the chromatic spectrum and the chromatic aberration which is similarly called color distortion or fringing. Chromatic aberration is often visible around things with hard shapes as light hits the item from various angles.
Optic Lens Single Covering Versus Multi-Coating
Various optic lenses can also have different coverings used to them. All lenses generally have at least some type of treatment or finish applied to them prior to being used in a rifle scope or optic.
This lens treatment can protect the lens from scratches while lowering glare and other less helpful things experienced in the shooting environment while sighting in with the scope. The quality of a single coated lens depends on the scope producer and how much you paid for it.
Some scope makers similarly make it a point to define if their optic lenses are coated or “multi” coated. Being “better” depends on the producer’s lens treatment technology and the quality of products used in building the rifle scope.
Hydrophobic Coating for Glass
Water on a lens doesn’t assist with preserving a clear sight picture through a scope at all. Many top of the line and high-end optic companies will coat their lenses with a hydrophilic or hydrophobic finishing.
Scope Installing Choices
Mounting options for scopes can be found in a couple of options. There are the basic scope rings which are individually mounted to the optic and one-piece mounts which cradle the scope. These different types of mounts also normally can be found in quick release variations which use toss levers which permit rifle operators to rapidly mount and dismount the optics.
Glass Mounts with Hex Key Rings
Standard, clamp-on type mounting scope rings use hex head screws to position to the flattop style Picatinny scope mount rails on rifles. These styles of scope mounts use a pair of individual rings to support the optic, and are normally constructed from 7075 T6 billet aluminum or similar materials which are created for long distance precision shooting. This form of scope mount is exceptional for rifle systems which are in need of a long lasting, rock solid mount which will not shift regardless of how much the scope is moved or jarring the rifle takes. These are the design of mounts you should have for a devoted scope setup on a reach out and touch someone hunting or hard target interdiction rifle which will rarely need to be changed or adjusted. Blue 242 Loctite threadlocker can also be used on screws to keep the hex screws from wiggling out after they are installed firmly in place. An example of these rings are the 30mm style from the Vortex Optics brand. The set normally costs around $200 USD
Quick-Release Cantilever Optic Rings
These types of quick-release rifle scope mounts can be used to quickly take off a scope from a rifle and reattach it to a different rifle. If they all use a comparable design mount, several scopes can often be swapped out in the field. The quick detach design is CNC machined from anodized 6061 T6 aluminum and the mounting levers fasten tightly to a flat top type Picatinny rail. This allows the scope to be sighted in while on the rifle, taken off of the rifle, and remounted while keeping the original sighting settings. These types of mounts are useful and handy for shooting platforms which are moved around a lot, to remove the optic from the rifle for protection, or for sight systems which are utilized in between numerous rifles. An example of this mount type is the 30mm mount designed by Vortex Optics. It generally costs around $250 USD
What to Know About Glass Tube Sealing and Gas Purging
Moisture inside your rifle optic can mess up a day of shooting and your pricey optic by causing fogging and developing residue inside of the scope tube. Most scopes prevent wetness from getting in the scope tube with a system of sealing O-rings which are waterproof.
Gas Purged Rifle Optic Tubes
Another part of avoiding 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 affected by temperature changes and pressure variations from the external environment which could potentially allow water vapor to leak in around the seals to fill the void which would otherwise exist. These are good qualities of a good rifle scope to seek out.
