Last update on July 3, 2022 // Source: Amazon API
Rifle Scope Product Details
Leupold Mark 4 Anti-Reflection Device – 40mm
Compatible with Leupold post-2004 riflescopes with 40mm Objective lenses.
Leupold ‘ve created these threaded anti-reflective devices in nearly every objective lens size, each featuring scores of tiny, light-transmitting honeycomb baffles that reduce lens glare without obscuring your sight picture.
Rifle Scope Product Features
About this item
Eliminates reflection of light from the lens
Honeycomb cells reduce glare similar to a 7″ sunshade
Attaches directly to listed optic
Actions speak louder than words. It’s a simple statement that we stand behind every single day. Because when you’re eight miles deep into the backcountry, a promise on a piece of paper is worthless unless the product in your hands performs when you need it most.
Keep innovating. That’s one of the keys to relentless performance.
We’re relentless because you’re relentless. You don’t back down. You don’t give in. You keep going when others stop. No matter where you take us, on the battlefield, in competition, or on the hunt, we won’t let you down.
So Be bold. Be tenacious. Be relentless.
Leupold accessories are designed to enhance your experience and are built to the same standards as optics. The right gear makes a difference. whether it’s in the backcountry, on the range, or hanging out downtown, we’ve got you covered.
Leupold Alumina 28mm Flip Back Lens Cover Leupold Alumina 56mm VX-L & Standard EP Flip Back Lens Cover Kit Leupold Alumina Standard EP Rubber Eyepiece Guard Leupold Mark 4 ARD Anti-Reflection Device
Features Constructed out of durable 6061-T6 aircraft grade aluminum Constructed out of durable 6061-T6 aircraft grade aluminum Protects the shooter during extreme uphill shots Inhibits your adversary’s ability to see reflections from your scope’s objective lens
Flip-back functionality keeps a low profile in the open position Flip-back functionality keeps a low profile in the open position Shades the eyepiece to improve viewing comfort Fits Leupold riflescopes with a 40mm objective
Powerful neodymium magnets keep the cap secure when closed Powerful neodymium magnets keep the cap secure when closed Fits Standard Leupold scope eyepieces Features scores of tiny, light-transmitting honeycomb baffles that reduce lens glare without obscuring your sight picture.
Triple O-ring seals for maximum protection from the elements Triple O-ring seals for maximum protection from the elements Adds a soft, finishing touch to the eyepiece of your scope Durable and protective
Compatible with post-2004 Leupold riflescopes with a 28mm objective lens Includes VX-L 56mm objective lens and standard eyepiece Matte Black Finish Matte Black Finish
About the Leupold Company
Leupold is a premium manufacturer for weapon scopes, optics, mounts, and other accessories used for guns like rifles and long guns. They innovate and make their mounts, scopes, and related products by applying elements which are long lasting and durable. This includes the Leupold Mark 4 Anti-Reflection Device – 40mm by Leupold. For additional shooting products, visit their website.
Rifle Optic Details
Rifle scopes enable you to precisely align a rifle at different targets by aligning your eye with the target over a range. They do this through magnification using a series of lenses within the scope. The scope’s positioning can be adapted for consideration of different ecological factors like wind and elevation increases or decreases to make up for bullet drop.
The scope’s function is to help the shooter understand precisely where the bullet will land based on the sight picture you are seeing using the scope as you line up the scope’s crosshair or reticle with the intended target. Many contemporary rifle scopes have about 11 parts which are arranged inside and externally on the optic. These optic pieces consist of the rifle scope’s body, lenses, adjustment turrets, objective focus rings, and other parts. Learn about the eleven parts of rifle optics.
Rifle Optic Varieties
Rifle scopes can be either “first focal plane” or “second focal plane” type of scopes. Choosing the perfect type of rifle optic depends on what type of shooting you plan on doing.
First Focal Plane Optic Info
Focal plane scopes (FFP) come with the reticle in front of the zoom lens. This causes the reticle to increase in size based on the amount of magnification being used. The result is that the reticle measurements are the same at the amplified distance as they are at the non amplified range. One tick on a mil-dot reticle at one hundred yards without “zoom” is still the exact same tick at one hundred yards by using 5x “zoom”. These types of scopes are practical for:
- Quick acquisition, long distance kinds of shooting
- Shooting circumstances where estimations are very little
- Experienced shooters who understand their aim point “hold over” and “lead” ratios for their weapon
- Shooters who do not mind the reticle is bigger and occupies more visual eyesight area than a SFP reticle
Second Focal Plane Scope Details
Second focal plane optics (SFP) come with the reticle behind the magnification lens. In the FFP example with the SFP scope, the 5x “zoom” one hundred yard tick reticle measurement would be 1/5th of the non “zoom” tick measurement.
- Far away styles of shooting where shooters have extra time to make ballistic computations
- Shooting where most of the shots happen within shorter ranges and spaces
- Shooters who like a clearer optic sight picture without room taken up by the bigger FFP reticle
Magnification for Rifle Glass
The amount of magnification a scope provides is determined 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.
Fixed Single Power Lens Optics
A single power rifle scope and optic will have a magnification number designator like 4×32. This indicates the magnification power of the scope is 4x power and the objective lens is 32mm. The zoom of this type of optic can not change since it is a fixed power scope.
About Variable Power Lens Scopes
Variable power rifle scopes use variable power levels. The power change is handled using the power ring part of the scope near the rear of the scope by the eye bell.
Glass Power and Ranges
Here are some suggested scope power levels and the distances where they may be successfully used. Remember that higher magnification scopes will not be as effective as lower magnification level scopes due to the fact that increased magnification can be a bad thing. The same concept applies to extended ranges where the shooter needs to have enough power to see where to properly aim the rifle.
Rifle Optic Lens Covering
All contemporary rifle optic lenses are covered in special coatings. There are various types and qualities of glass lens finishings. When thinking about high end rifle optics and scope systems, Lens finish can be an essential aspect of defining the rifle’s capability. The glass lenses are one of the most key pieces of the optic because they are what your eye sees through while sighting a rifle in on the target. The covering on the lenses shields the lens surface and even improves anti glare from refracted light and color profiles.
HD Versus ED Glass Lens Coatings
Some rifle glass suppliers will also use “HD” or high-definition glass finishings which make the most of different processes, chemical applications, polarizations, and elements to extract a wide range of colors and viewable target definition through lenses. This HD covering is commonly used with increased density glass which decreases light’s capability to refract through the lens glass. Some scope vendors use “HD” to describe “ED” suggesting extra-low dispersion glass. ED handles how certain colors are presented on the chroma spectrum and the chromatic aberration which is also called color distortion or fringing. Chromatic aberration is often noticeable around objects with hard edges and shapes as light hits the object from certain angles.
Rifle Glass Lens Single Finishing Versus Multi-Coating
Various scope lenses can even have different coverings applied to them. All lenses normally 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 since the lens isn’t just a raw piece of glass. It is part of the finely tuned optic. It requires a coating to be applied to it so that the lens will be optimally functional in numerous types of environments, degrees of light (full VS shade), and other shooting conditions.
This lens treatment can offer protection to 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 manufacturer and how much you paid for it.
Some scope makers likewise make it a point to define if their optic lenses are covered or “multi” coated. This suggests the lens has several treatments applied to the surfaces of the glass. If a lens gets several treatments, it can establish that a maker is taking multiple steps to combat different natural factors like an anti-glare finish, a scratch resistant anti-abrasion coating, followed by a hydrophilic coating. This additionally doesn’t always mean the multi-coated lens is much better than a single covered lens. Being “much better” hinges on the maker’s lens treatment solutions and the quality of components used in constructing the rifle optic.
Hydrophobic Lens Finish
Water on an optic’s lens doesn’t support preserving a clear sight picture through an optic in any way. Numerous top of the line or premium optic manufacturers will coat their lenses with a hydrophilic or hydrophobic covering. The Steiner Optics Nano-Protection is a fine example of this kind of treatment. It deals with the surface area of the Steiner optic lens so the water molecules can not bind to it or create surface tension. The result is that the water beads move off of the scope to keep a clear, water free sight picture.
Choices for Mounting Optics on Firearms
Installing options for scopes can be found in a few options. There are the standard scope rings which are individually mounted to the scope and one-piece scope mounts which cradle the scope. These various types of mounts also typically are made in quick release variations which use manual levers which enable rifle shooters to quickly install and remove the optics.
Hex Key Rifle Optic Rings
Standard, clamp design mounting scope rings use hex head screws to mount to the flattop design Picatinny scope installation rails on rifles. These types of scope mounts use a couple of separate rings to support the optic, and are made from 7075 T6 billet aluminum which are created for long range accuracy shooting. This type of scope install is fine for rifles which require a long lasting, rock solid mounting solution which will not move no matter how much the scope is moved or abused.
Glass Mounting Solutions with Quick-Release Cantilever Rings
These types of quick-release rifle scope mounts can be used to rapidly connect and remove a scope from a rifle before reattaching it to a different rifle. Several scopes can also be switched out if they all use a compatible style mount. These types of mounts come in handy for rifle platforms which are carried a lot, to remove the optic from the rifle for protection, or for scopes which are used between several rifles or are situationally focused.
Sealing and Gas Purging for Rifle Glass Tubes
Moisture inside your rifle optic can destroy a day on the range and your highly-priced optic by inducing fogging and developing residue inside of the scope’s tube. A lot of optics protect against wetness from going into the scope tube with a system of sealing O-rings which are waterproof. Usually, these water-resistant optics can be submerged under 20 or 30 feet of water before the water pressure can force moisture past the O-rings. This should be ample wetness prevention for conventional use rifles for hunting and sporting purposes, unless you plan on taking your rifle boating and are concerned about the optic still working if it goes over the side and you can still find the firearm.
Details on Optic Tube Gas Purging
Another part of preventing the accumulation of wetness inside of the rifle scope tube is filling the tube with a gas like nitrogen. Because this area is already occupied by the gas, the scope is less influenced by condition shifts and pressure differences from the external environment which may possibly enable water vapor to permeate in around the seals to fill the void which would otherwise exist. These are good qualities of a good rifle scope to look for.