Description
Rifle Scope Cover Product Details
Trijicon ACOG Heavy Duty Scopecoat
The Trijicon ACOG (advanced combat optical Gunsight) is a fixed power, compact riflescope with an illuminated reticle pattern for use in bright to low/no light. The ACOG is designed to be extremely durable and reliable. Combining traditional, precise distance marksmanship with CQB speed, many variants include a bullet drop compensated (BDC) reticle. Every feature of its design was chosen for a single purpose: to provide increased hit potential in all lighting conditions.
Rifle Scope Cover Product Features
Large viewing area
Ambidextrous adjustable brightness settings
Aircraft-Grade aluminum housing
Waterproof to 30 meters (100 ft.)
Single Lithium Battery
About the Trijicon Company
Trijicon is a premium producer for long gun scopes, optics, mounting solutions, and other accessories used for firearms like rifles and long guns. They innovate and supply their scopes and related products by making the most of elements which are resilient and long lasting. This includes the Trijicon ACOG Heavy Duty Scopecoat by Trijicon. For more shooting items, visit their site.
All About Optics
Rifle scopes allow you to specifically aim a rifle at different targets by lining up your eye with the target at range. They accomplish this through magnifying the target by using a set of lenses within the scope. The scope’s positioning can be adjusted to account for different natural things like wind and elevation to account for bullet drop.
The scope’s function is to help shooters understand exactly where the bullet will land based upon the sight picture you are seeing via the optic as you align the scope’s crosshair or reticle with the target. The majority of contemporary rifle optics have around 11 parts which are located within and on the exterior of the optic. These optic pieces include the rifle scope’s body, lenses, windage turrets, objective focus rings, and other components. Learn about the eleven parts of scopes.
About Rifle Glass Styles
Rifle scopes can be either “first focal plane” or “second focal plane” type of optics. Going for the finest type of rifle glass depends on what type of shooting you plan on doing.
Info on First Focal Plane Glass
First focal plane optics (FFP) come with the reticle ahead of the zoom lens. This causes the reticle to increase in size based upon the level of magnification being used. The result is that the reticle measurements are the same at the magnified range as they are at the non magnified range. One tick on a mil-dot reticle at one hundred yards with no “zoom” is still the same tick at one hundred yards with 5x “zoom”. These types of scopes work for:
- Quick acquisition, long distance kinds of shooting
- Shooting scenarios where calculations are marginal
- Experienced shooters who understand their target “hold over” and also “lead” relationships for their firearms
- Shooters who don’t mind the reticle is bigger and requires more visual sight room than a SFP reticle
About Second Focal Plane Scopes
Second focal plane scopes (SFP) come with the reticle behind 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.
- Long distance kinds of shooting where shooters have more time to make ballistic calculations
- Shooting where most of the shots happen within much shorter distances and ranges
- Shooters who prefer a clearer optic sight picture without room used up by the larger sized FFP reticle
Rifle Optic Zoom
The quantity of magnification a scope offers is identified by the diameter, density, and curvatures of the lenses inside of the rifle scope. The magnification of the scope is the “power” of the scope.
Fixed Power Lens Rifle Glass Info
A single power rifle scope will have a zoom number designator like 4×32. This means the zoom power of the scope is 4x power while the objective lens is 32mm. The magnification of this kind of optic can not fluctuate given that it is fixed.
Variable Power Lens Optics
Variable power rifle scopes use variable power levels. The power adjustment is handled using the power ring part of the scope near the rear of the scope by the eye bell.
Optic Power and Ranges
Here are some suggested scope power levels and the distances where they could be efficiently used. High power glass will not be as effective as lower magnification level rifle scope glass considering too much magnification can be a negative aspect depending on your shooting distance. The same concept goes for longer ranges where the shooter needs sufficient power to see where to properly aim the rifle.
Details on Lens Finish
All contemporary rifle optic lenses are layered. There are various types and qualities of glass coverings. When looking at luxury rifle scope devices, Lens covering can be an important component of defining the capability of the rifle. The lenses are among the most crucial components of the scope since they are what your eye sees through while sighting a rifle in on the target. The finishing on the lenses protects the lens surface area as well as improves anti glare capabilities from excess sunshine and color exposure.
Details on Rifle Scope Lens Coatings – HD Versus ED
Some rifle scope producers also use “HD” or high-definition lense coatings which apply different processes, chemical applications, polarizations, and elements to draw out various color ranges and viewable target visibility through the lens. This HD covering is normally used with more costly high density lens glass which lowers light’s capability to refract through the lens glass. Some scope vendors use “HD” to refer to “ED” meaning extra-low dispersion glass. ED deals with how colors are represented on the chroma spectrum and the chromatic aberration or difference which is similarly called color distortion or fringing. Chromatic aberration is often obvious over objects with hard edges and outlines as light hits the object from particular angles.
Optic Lens Single Coating Versus Multi-Coating
Different optic lenses can even have different finishings applied to them. All lenses usually have at least some kind of treatment or finish applied to them prior to being used in a rifle scope or optic assembly. Since the lens isn’t just a raw piece of glass, they require performance enhancing coatings. It becomes part of the finely tuned optic. It must have a covering placed on it so that it will be efficiently functional in lots of kinds of environments, degrees of sunlight (full VS shade), and other shooting conditions.
This lens treatment can offer protection to the lens from scratches while decreasing glare and other less useful 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 manufacturers similarly make it a point to specify if their optic lenses are coated or “multi” coated. Being “better” depends on the producer’s lens treatment innovation and the quality of products used in building the rifle scope.
Glass Lens Hydrophobic Coating
Water on an optic’s lens does not help with preserving a clear sight picture through an optic in any way. Numerous top of the line and high-end optic producers will coat their lenses with a hydrophilic or hydrophobic covering. The Steiner Optics Nano-Protection is a good example of this kind of treatment. It treats the surface area of the Steiner scope lens so the water molecules can not bind to it or produce surface tension. The result is that the water beads move off of the scope to keep a clear, water free sight picture.
Optic Mounting Alternatives
Mounting options for scopes are available in a few choices. There are the standard scope rings which are separately installed to the scope and one-piece mounts which cradle the scope. These various kinds of mounts also typically can be found in quick release versions which use toss levers which enable rifle operators to rapidly install and dismount the glass.
Rifle Scope Mounts with Hex Key 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 two different rings to support the optic, and are made from 7075 T6 billet aluminum which is designed for long range precision shooting. This type of scope mount is great for rifles which require a long lasting, rock solid mounting solution which will not move no matter how much the scope is moved or abuse the rifle takes.
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 comparable style mount, multiple scopes can also be swapped out on the range. The quick detach design is CNC machined from anodized 6061 T6 aluminum and the mounting levers attach securely to a flat top type Picatinny rail. This permits the scope to be sighted in while on the rifle, taken off of the rifle, and remounted back on the rifle while keeping precision. These types of mounts are useful and handy for rifles which are moved around a lot, to remove the scope from the rifle for protection, or for aiming systems which are employed between a number of rifles. An example of this mount style is the 30mm mount from Vortex Optics. It usually costs around $250 USD
Sealing and Gas Purging for Glass Tubes
Moisture inside your rifle glass can spoil a day of shooting and your highly-priced optic by resulting in fogging and generating residue within the scope tube. Most optics protect against humidity from entering the scope tube with a series of sealing O-rings which are waterproof. Generally, these water-resistant optics can be submerged within 20 or 30 feet of water before the water pressure can push moisture past the O-rings. This should be plenty of wetness prevention for common use rifles for hunting and sporting purposes, unless you anticipate taking your rifle aboard a watercraft and are concerned about the scope still working if it is submerged in water and you can still salvage the rifle.
Gas Purged Rifle Scope Tubes
Another component of preventing the accumulation of wetness within the rifle scope tube is filling the tube with a gas like nitrogen. Given that this space is currently taken up by the gas, the glass is less impacted by temperature shifts and pressure variations from the external environment which might possibly allow water vapor to seep in around the seals to fill the void which would otherwise exist. These are good qualities of a good rifle scope to look for.
