Description
Rifle Scope Product Details
U.S. Optics FDN-17X Riflescope, 3.2-17x50mm, 34mm Tube, FFP, MPR Reticle, 1/10 MIL FDN 17X MPR
U.S. Optics FDN-17X Riflescope, 3.2-17x50mm, 34mm Tube, FFP, MPR Reticle, 1/10 MIL Elevation/ Windage Adjustment, Black, Medium, FDN 17X MPR
Rifle Scope Product Features
U.S. Optics FDN-17X Riflescope
3.2-17x50mm, 34mm Tube
FFP, MPR Reticle
1/10 MIL FDN 17X MPR
About the U.S. Optics Brand
U.S. Optics is a premium supplier for long gun scopes, optics, mounts, and other add-ons used for firearms like rifles and long guns. They create and build their scopes and related products by making the most of elements which are resilient and long lasting. This includes the U.S. Optics FDN-17X Riflescope, 3.2-17x50mm, 34mm Tube, FFP, MPR Reticle, 1/10 MIL FDN 17X MPR by U.S. Optics. For additional shooting items, visit their website.
Info Rifle Glass
Rifle scopes allow you to specifically align a rifle at various targets by lining up your eye with the target at range. They do this through zoom by utilizing a series of lenses within the scope. The scope’s alignment can be adapted for the consideration of numerous environmental factors like wind and elevation increases or decreases to make up 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 seeing through the optic as you line up the scope’s crosshair or reticle with the intended point of impact. Many contemporary rifle scopes have around 11 parts which are arranged internally and externally on the scope. These optic pieces consist of the rifle scope’s body, lenses, adjustment dials or turrets, objective focus rings, and other components. Learn about the eleven parts of glass.
The Types of Rifle Scopes
Rifle scopes can be either “first focal plane” or “second focal plane” type of scopes. The type of focal plane an optic has determines where the reticle or crosshair lies in connection with the optic’s magnification. It literally indicates the reticle is behind or before the magnification lens of the optic. Considering the most reliable sort of rifle optic is based upon what style of shooting you anticipate doing.
First Focal Plane Glass
Focal plane scopes (FFP) feature the reticle in front of the magnification lens. This induces the reticle to increase in size based on the extent of zoom being used. The result is that the reticle measurements are the same at the magnified distance as they are at the non amplified range. For instance, one tick on a mil-dot reticle at 100 yards with no “zoom” is still the exact same tick at one hundred yards using 5x “zoom”. These types of scopes are useful for:
- Quick acquisition, far away kinds of shooting
- Shooting circumstances where estimations are minor
- Experienced shooters who know their aim point “hold over” and also “lead” correlations for their firearm
- Shooters who do not mind the reticle is enlarged and requires more visual eyesight room than a SFP reticle
Info About Second Focal Plane Scopes
Second focal plane optics (SFP) include the reticle behind the magnification 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 forms of shooting where shooters have more time to make ballistic calculations
- Shooting where most shots take place within much shorter proximities and ranges
- Shooters who want a clearer optic picture with less area taken up by the enlarged FFP reticle
Zoom for Optics
The level of scope zoom you need on your optic depends on the kind of shooting you plan to do. Just about every kind of rifle scope supplies some level of magnification. The level of magnification a scope gives is determined by the size, thickness, and curves of the lenses inside of the rifle optic. The magnification of the optic is the “power” of the glass. This suggests what the shooter is checking out through the scope is magnified times the power element of what can generally be seen by human eyes.
Fixed Single Power Lens Optics
A single power rifle scope and optic comes with a magnification number designator like 4×32. This implies the zoom power of the scope is 4x power and the objective lens is 32mm. The magnification of this kind of optic can not fluctuate considering that it is a fixed power scope.
Adjustable Power Lens Glass Details
Variable power rifle scopes can be changed between magnification power levels. It will note the zoom amount in a format like 2-10×32. These numbers mean the zoom of the scope could be adjusted between 2x and 10x power. This always utilizes the powers in-between 2 and 10. The power shift is accomplished by applying the power ring part of the scope near the back of the scope by the eye bell.
Power and Range Correlations
Here are some recommended scope power levels and the ranges where they may be effectively used. Keep in mind that higher power optics will not be as practical as lower powered scopes because too much zoom can be a detractor. The exact same concept applies to longer distances where the shooter needs to have sufficient power to see exactly where to properly aim the rifle.
Lens Covering for Rifle Glass
All contemporary rifle optic lenses are layered. There are various types and qualities of coatings. When considering high end rifle scope systems, Lens covering can be a crucial element of a rifle. The lenses are among the most crucial parts of the optic given that they are what your eye sees through while sighting a rifle in on the point of impact. The finishing on the lenses protects the lens exterior as well as helps with anti glare capabilities from excess sunrays and color recognition.
HD Versus ED Lenses
Some scope producers also use “HD” or high-definition lens coverings which use various procedures, chemicals, polarizations, and components to draw out separate colors and viewable definition through the lens. Some scope makers use “HD” to refer to “ED” indicating extra-low dispersion glass.
Single Covering Versus Multi-Coating for Scopes
Various optic lenses can likewise have different finishings applied to them. All lenses generally have at least some type of treatment or coating used to them before being used in a rifle scope or optic.
This lens treatment can safeguard the lens from scratches while reducing glare and other less useful things experienced in the shooting environment while sighting in with the scope. The quality of a single coated lens depends on the scope manufacturer and how much you paid for it.
Some scope manufacturers also make it a point to define if their optic lenses are layered or “multi” covered. Being “much better” depends on the producer’s lens treatment technology and the quality of products used in developing the rifle scope.
What to Know About Anti-water Coating
Water on a lens does not assist with maintaining a clear sight picture through a scope at all. Many top of the line and military grade optic companies will coat their lenses with a hydrophilic or hydrophobic coating which is water repellent.
Options for Installing Glass on Firearms
Mounting options for scopes come in a couple of options. There are the standard scope rings which are individually mounted to the optic and one-piece scope mounts which cradle the scope. These different types of mounts also usually can be found in quick release versions which use throw levers which permit rifle operators to quickly install and remove the optics.
Rifle Optic Mounts with Hex Key Rings
Normal, clamp style mounting scope rings use hex head screws to mount to the flattop style Picatinny scope installation rails on rifles. These types of scope mounts use two different rings to support the optic, and are often made from 7075 T6 billet aluminum which are designed for long distance accuracy shooting. This type of scope install is wonderful for rifles which require a resilient, sound mounting solution which will not move no matter how much the scope is moved or abuse the rifle takes.
Quick-Release Cantilever Glass Rings
These types of quick-release rifle scope mounts can be used to rapidly attach and remove a scope from a rifle before reattaching it to a different rifle. Multiple scopes can also be switched out if they all use a similar design mount. These types of mounts are handy for rifles which are transported a lot, to remove the optic from the rifle for protection, or for optics which are used in between numerous rifles or are situationally focused.
Details on Optic Tube Sealing and Gas Purging
Wetness inside your rifle scope can destroy a day of shooting and your expensive optic by bringing about fogging and creating residue inside of the scope tube. Most scopes prevent wetness from entering the scope tube with a system of sealing O-rings which are water resistant.
Gas Purged Rifle Glass Tubes
Another component of preventing the accumulation of wetness within the rifle scope’s tube is filling the tube with a gas like nitrogen. Given that this area is currently occupied by the gas, the optic is less impacted by temperature shifts and pressure variations from the outside environment which could possibly enable 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 look for.
