Description
Rifle Scope Product Details
U.S. Optics FDN-10X Riflescope, 1.8-10x40mm, 34mm Tube, FFP, Gap Reticle, 1/10 MIL FDN 10x Gap, Black
U.S. Optics FDN-10X Riflescope, 1.8-10x40mm, 34mm Tube, FFP, GAP Reticle, 1/10 MIL Elevation/ Windage Adjustment, Black, Small, FDN 10x GAP
Rifle Scope Product Features
Package Dimensions: 12.0 L x 3 H x 3 W (inches)
Package Weight : 1 pounds
Color: BLACK
Country of Origin : China
About the U.S. Optics Scope Maker
U.S. Optics is a premium company for weapon scopes, optics, mounts, and other add-ons used for firearms like rifles and long guns. They style and manufacture their products by choosing elements which are long lasting and resilient. This includes the U.S. Optics FDN-10X Riflescope, 1.8-10x40mm, 34mm Tube, FFP, Gap Reticle, 1/10 MIL FDN 10x Gap, Black by U.S. Optics. For more shooting items, visit their site.
What You Need to Know About Scopes
Rifle scopes enable you to specifically align a rifle at different targets by aligning your eye with the target at range. They do this through zoom by using a series of lenses inside the scope. The scope’s alignment can be adjusted to take into account various ecological factors like wind speed and elevation to make up for bullet drop.
The scope’s function is to understand precisely where the bullet will hit based on the sight picture you are seeing with the scope as you line up the scope’s crosshair or reticle with the target. Many modern-day rifle scopes have about eleven parts which are found within and outside of the scope. These parts include the rifle scope’s body, lenses, windage and elevation turrets or dials, focus rings, and other components. See all eleven parts of scopes.
Rifle Glass Styles
Rifle scopes can be either “first focal plane” or “second focal plane” kind of scopes. The kind of focal plane a scope has determines where the reticle or crosshair lies in regard to the optic’s zoom. It simply indicates the reticle is behind or before the magnifying lens of the optic. Deciding on the best type of rifle scope depends on what kind of shooting you intend on undertaking.
First Focal Plane Glass Info
Focal plane scopes (FFP) feature the reticle in front of the magnification lens. These styles of scopes are beneficial for:
- Quick acquisition, long distance kinds of shooting
- Shooting situations where estimations are very little
- Experienced shooters who know their aim point “hold over” and “lead” correlations for their firearms
- Shooters who do not mind the reticle is enlarged and requires more visual sight area than a SFP reticle
Second Focal Plane Optic Info
Second focal plane optics (SFP) feature the reticle to the rear of the magnification lens. In the FFP example with the SFP scope, the 5x “zoom” 100 yard tick would be 1/5th of the non “zoom” tick reticle measurement.
- Long distance styles of shooting where shooters have more time to make ballistic computations
- Shooting where most of the shots occur within much shorter ranges and spaces
- Shooters who prefer a clearer optic sight picture with less space used up by the enlarged FFP reticle
Rifle Optic Zoom
The amount of scope magnification you need on your optic is based on the form of shooting you like to do. Virtually every kind of rifle scope gives some amount of magnification. The level of zoom a scope supplies is established by the size, density, and curvatures of the lenses inside of the rifle scope. The magnification of the scope is the “power” of the opic. This suggests what the shooter is checking out through the scope is magnified times the power aspect of what can typically be seen by human eyes.
Single Power Lens Rifle Optics
A single power rifle optic uses a zoom number designator like 4×32. This suggests the magnification power of the scope is 4x power and the objective lens is 32mm. The zoom of this type of scope can not change given that it is a fixed power optic.
About Variable Power Lens Rifle Glass
Variable power rifle scopes can be changed between magnification levels. These types of scopes will note the zoom degree in a format like 2-10×32. These numbers imply the magnification of the scope can be changed between 2x and 10x power. This always includes the powers in-between 2 and 10. The power adaptation is accomplished by applying the power ring component of the scope near the rear of the scope by the eye bell.
Scope Power and Ranges
Here are some advised scope power settings and the distances where they could be successfully used. High power scopes will not be as efficient as lower powered scopes because too much zoom can be a bad thing. The same idea applies to extended ranges where the shooter needs sufficient power to see precisely where to properly aim the rifle at the target.
Rifle Scope Lens Covering
All modern rifle scope lenses are coated. There are different types and qualities of glass finishes. Lens finish can be an essential aspect of a rifle when contemplating luxury rifle optics and scope systems. The glass lenses are one of the most key parts of the scope since they are what your eye sees through while sighting a rifle in on the point of impact. The finishing on the lenses offers protection to the lens surface and even helps with anti glare capabilities from refracted sunlight and color presence.
HD Versus ED Glass Lens Coatings
Some rifle glass companies even use “HD” or high-def glass coverings which employ different processes, chemical applications, polarizations, and components to draw out a wide range of colors and viewable target definition through the lens. This high-def finishing is normally used with more costly, high density glass which drops light’s potential to refract through the lens glass. Some scope makers use “HD” to describe “ED” implying extra-low dispersion glass. ED handles how certain colors are presented on the chroma spectrum and the chromatic difference or aberration which is also called color distortion or fringing. Chromatic aberration can be obvious around items with well defined shapes as light hits the object from various angles.
Single Glass Lens Finish Versus Multi-Coating
Different optic lenses can likewise have various finishes used to them. All lenses typically have at least some type of treatment or finishing used to them prior to being used in a rifle scope or optic.
Single layered lenses have a treatment applied to them which is normally a protective and boosting multi-purpose treatment. This lens treatment can safeguard the lens from scratches while minimizing 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 upon the scope designer and the amount you spent paying for it. Both the manufacturer and amount are indications of the lens quality.
Some scope manufacturers also make it a point to define if their optic lenses are coated or “multi” coated. Being “better” depends on the manufacturer’s lens treatment innovation and the quality of products used in developing the rifle scope.
Hydrophobic Lens Finish
Water on a scope lens does not support maintaining a clear sight picture through an optic at all. Lots of top of the line and premium optic manufacturers will coat their lenses with a hydrophilic or hydrophobic coating. The Steiner Optics Nano-Protection is a fine example of this type of treatment. It treats the surface of the Steiner scope lens so the H2O particles can not bind to it or produce surface tension. The outcome is that the water beads roll off of the scope to maintain a clear, water free sight picture.
Scope Installation Options
Installing solutions for scopes can be found in a couple of options. There are the basic scope rings which are individually mounted to the scope and one-piece mounts which cradle the scope. These various kinds of mounts also usually come in quick release variations which use throw levers which enable rifle operators to rapidly install and remove the scope.
Hex Key Rifle Optic Rings
Basic, clamp type mounting scope rings use hex head screws to mount to the flattop design Picatinny scope mounting rails on rifles. These styles of scope mounts use double detached rings to support the optic, and are made from 7075 T6 billet aluminum or similar materials which are manufactured for far away precision shooting. This type of scope mount is exceptional for rifle systems which are in need of a resilient, hard use mount which will not shift despite how much the scope is moved about or jarring the rifle takes. These are the type of mounts you really want to have for a dedicated scope system on a reach out and touch someone scouting or competition firearm that will pretty much never need to be changed or recalibrated. Blue 242 Loctite threadlocker can additionally be used on the screws to prevent the hex screws from wiggling out after they are installed tightly in position. An example of these rings are the 30mm type made by the Vortex Optics brand. The set generally costs around $200 USD
Quick-Release Cantilever Rifle Scope 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 style mount, multiple scopes can also be swapped in the field. The quick detach design is CNC machined from anodized 6061 T6 aluminum and the mounting levers connect tightly to a flat top design Picatinny rail. This enables the scope to be sighted in while on the rifle, removed from the rifle, and remounted back on the rifle while retaining precision. These types of mounts are useful and beneficial for shooting platforms which are carried a lot, to remove the scope glass from the rifle for protection, or for scopes which are chosen for use between numerous rifles. An example of this mount type is the 30mm mount from the Vortex Optics brand. It usually costs around $250 USD
Sealing and Gas Purging for Glass Tubes
Moisture inside your rifle glass can ruin a day of shooting and your pricey optic by inducing fogging and creating residue inside of the scope tube. Most scopes prevent humidity from getting in the scope tube with a series of sealing O-rings which are water resistant. Normally, these water resistant scopes can be submerged underneath 20 or 30 feet of water before the water pressure can push moisture past the O-rings. This should be ample moisture content prevention for conventional use rifles for hunting and sporting purposes, unless you anticipate taking your rifle boating and are concerned about the scope still performing if it is submerged in water and you can still rescue the rifle.
Gas Purged Rifle Glass Tubes
Another part of preventing the buildup of wetness inside of the rifle scope tube is filling the tube with a gas like nitrogen. Considering that this area is currently taken up by the gas, the glass is less altered by climate shifts and pressure variations from the external environment which may possibly 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.
