Rifle Scope Product Details
Letra 4-in-1 4-16×50 EG Riflescope Kit, Dot Laser, Reflex Sight, Offset Rail Mount
Four in one 4-16x50EG riflescope system provides incredibly good value. Our premium riflescope features unsurpassed light transmission, uncompromising mechanical performance and unbeatable optical clarity. The matching green laser sight helps you to aim better and the red/green dot sight equips you with better vision even in the darkest environment. Magnification is from 4 times up to 16 times. Green and red illuminations with 5 brightness adjustments for the riflescope guarantee clear visions; 4 reticle patterns for you to choose from for the red/green dot sight along with unlimited brightness control. The 45-degree offset angle rail mount makes it easy for you to attach other attachments to it. Water proof and fog proof, it also comes with lens covers. Take our riflescope with you on your next hunting trip!
Rifle Scope Product Features
4-in-1, comes with 4-16x50EG rangefinder reticle, a green laser sight, a red/green dot sight and a 45-Degree offset angle rail mount
Stunning flower shaped objective lens, aluminum alloy construction, durable and versatile
Unsurpassed light transmission, uncompromising mechanical performance and clarity
Multi-coated, O-ring sealing and nitrogen filling ensures 100% water and fog-proof.
Magnifications from 4X up to 16X, green/red illuminations for the riflescope and 5 brightness adjustments for the riflescope, 4 reticle patterns and unlimited brightness control for the red/green dot sight
About the Letra Brand
Letra is a premium manufacturer for weapon scopes, optics, mounts, and other accessories used for firearms like rifles and long guns. They design and manufacture their scopes and related products by choosing materials which are resilient and long lasting. This includes the Letra 4-in-1 4-16×50 EG Riflescope Kit, Dot Laser, Reflex Sight, Offset Rail Mount by Letra. For more shooting items, visit their site.
Information Rifle Glass
Rifle scopes permit you to specifically align a rifle at various targets by aligning your eye with the target at range. They do this through magnification using a series of lenses within the scope. The scope’s alignment can be adjusted for the consideration of various environmental things like wind and elevation to make up for bullet drop.
The scope’s purpose is to understand precisely where the bullet will land based on the sight picture you are viewing through the optic as you line up the scope’s crosshair or reticle with the target. Many modern-day rifle scopes and optics have around 11 parts which are found within and externally on the scope body. These parts consist of the rifle scope’s body, lenses, adjustment dials or turrets, objective focus rings, and other components. See all eleven parts of a rifle optical system.
The Types of Rifle Scopes
Rifle scopes can be either “first focal plane” or “second focal plane” type of scopes. Selecting the optimal type of rifle scope depends on what type of shooting you plan to do.
First Focal Plane Glass
Focal plane scopes (FFP) include the reticle in front of the magnification lens. These styles of scopes are helpful for:
- Quick acquisition, far away types of shooting
- Shooting scenarios where estimations are low
- Experienced shooters who understand their aim point “hold over” as well as “lead” ratios for their firearm
- Shooters who don’t 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 to the rear of the zoom lens. In the FFP example with the SFP scope, the 5x “zoom” one hundred yard tick measurement would be 1/5th of the non “zoom” tick measurement.
- Far away types of shooting where shooters have extra time to make ballistic estimations
- Shooting where most shots happen within shorter proximities and ranges
- Shooters who choose a clearer optic sight picture without space used up by the larger size FFP reticle
Ins and Outs of Optic Magnification
The quantity of magnification a scope provides is determined by the size, density, and curvatures of the lenses inside of the rifle scope. The magnification of the scope is the “power” of the scope.
Info on Fixed Power Lens Rifle Glass
A single power rifle scope or optic will have a zoom number designator like 4×32. This means the zoom power of the scope is 4x power and the objective lens is 32mm. The zoom of this kind of scope can not adjust since it is a fixed power optic.
Variable Power Lens Rifle Optics
Variable power rifle scopes use enhanced power. The power modification is performed using the power ring part of the scope near the back of the scope by the eye bell.
Glass Power Level and Ranges
Here are some advised scope powers and the distances where they may be successfully used. Consider that high power scopes and optics will not be as efficient as lower powered scopes since too much magnification can be a negative thing in certain situations. The exact same idea relates to longer ranges where the shooter needs to have increased power to see precisely where to best aim the rifle at the target.
Details on Lens Covering
All modern-day rifle optic lenses are coated. There are different types and qualities of glass finishings. Lens finish is an essential aspect of a rifle’s setup when looking at high end rifle optics and scope systems. The lenses are one of the most significant parts of the optic considering they are what your eye looks through while sighting a rifle in on the target. The covering on the lenses protects the lens exterior and even helps with anti glare from excess sunrays and color discernibility.
HD Versus ED Rifle Optic Lens Coatings
Some rifle scope makers also use “HD” or high-def lense finishings which apply various processes, rare earth compounds, aspects, and polarizations to enhance a wide range of colors and viewable target visibility through lenses. This high-def finish is normally used with higher density glass which reduces light’s ability to refract by means of the lens glass. Some scope makers use “HD” to describe “ED” indicating extra-low dispersion glass. ED handles how colors are presented on the chroma spectrum and the chromatic deviance or aberration which is also called color distortion or fringing. Chromatic aberration can be noticeable over things with well defined shapes as light hits the item from various angles.
Rifle Glass Lens Single Finishing Versus Multi-Coating
Various scope lenses can even have various coverings applied to them. All lenses usually have at least some type of treatment or finishing applied to them prior to being used in a rifle scope or optic assembly. This is because the lens isn’t simply a raw piece of glass. It becomes part of the finely tuned optic. It must have a covering applied to it so that it will be efficiently functional in lots of types of environments, degrees of light (full VS shaded), and other shooting conditions.
This lens treatment can offer protection to 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 layered lens depends on the scope producer and how much you paid for it.
Some scope makers also make it a point to specify if their optic lenses are coated or “multi” covered. This indicates the lens has numerous treatments applied to them. If a lens gets numerous treatments, it can prove that a company is taking multiple steps to combat various environmental factors like an anti-glare finish, a scratch resistant anti-abrasion finish, followed by a hydrophilic coating. This additionally does not necessarily indicate the multi-coated lens will perform better than a single coated lens. Being “better” depends on the maker’s lens treatment solutions and the quality of components used in building the rifle optic.
What to Know About Hydrophobic Finishing
Water on a lens does not help with keeping a clear sight picture through a scope at all. Numerous top of the line and high-end scope companies will coat their lenses with a hydrophobic or hydrophilic coating.
Glass Installing Alternatives
Installing approaches 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 scope mounts which cradle the scope. These different types of mounts also generally are made in quick release versions which use toss levers which permit rifle shooters to quickly mount and dismount the scope.
Hex Key Rifle Optic 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 a couple of different rings to support the optic, and are made from 7075 T6 billet aluminum which is created for long range accuracy shooting. This type of scope install is fine for rifles which require a long lasting, sound mount which will not move no matter how much the scope is moved or abuse the rifle takes.
Rifle Optic Mounting Solutions with Quick-Release Cantilever Rings
These kinds of quick-release rifle scope mounts can be used to quickly connect and remove a scope from a rifle. A wide range of scopes can also be switched out if they all use a similar designed mount. The quick detach mount style is CNC crafted from anodized 6061 T6 aluminum and the mounting levers attach solidly to a flat top design Picatinny rail. This permits the scope to be sighted in while on the rifle, taken off of the rifle, and remounted while maintaining accuracy. These types of mounts come in practical for shooting platforms which are hauled around a lot, to take off the optic from the rifle for protection, or for optics which are employed in between multiple rifles. An example of this mount type is the 30mm mount from the Vortex Optics manufacturer. It usually costs around $250 USD
Rifle Glass Tube Sealing and Gas Purging
Moisture inside your rifle scope can destroy a day on the range and your pricey optic by inducing fogging and generating residue inside of the scope’s tube. Many scopes protect against moisture from getting in the scope tube with a system of sealing O-rings which are waterproof. Generally, these water resistant scopes can be submerged underneath 20 or 30 feet of water before the water pressure can force moisture past the O-rings. This should be ample moisture prevention for standard use rifles, unless you intend on taking your rifle on your motorboat and are concerned about the scope still functioning if it goes over the side and you can still rescue the gun.
Glass Gas Purging
Another element of avoiding the buildup of moisture within the rifle scope’s tube is filling the tube with a gas like nitrogen. Given that this area is already occupied by the gas, the glass is less affected by temperature shifts and pressure differences from the outdoor environment which could possibly allow water vapor to permeate 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.