Last update on March 27, 2023 // Source: Amazon API
Rifle Sight Product Details
FUSION Rifle/Shotgun Rear Sight – Adjustable Bar-13
LPA Rear Sight Model: BAR-13. Black blade, fully adjustable sight assembly for Long-Guns. This sight works with many OEM standard shotgun and rifle sights for direct mounting on the receiver or barrel. Works well on the barrel as an adjustable express style setup. This is a high precision fully adjustable sight made for use on Rifle/Shotgun barrels and/or mounting on the receiver. This is a “weld-on” / “solder-on” style mount. This is a high quality sight assembly made of all steel construction. Fully adjustable, micro ratchet adjustments and white line graduations for precision movements. Measurements: Length: 1.350″ Base Width: .625″ Height: .360″ Blade Height: .300″ Blade Height: .300″ Blade Width: .740″ Notch Width: .095″ Under Radius Approx.: 1/2″
Rifle Sight Product Features
All Steel Construction
About the FUSION Scope Maker
FUSION is a premium producer for firearm scopes, optics, mounts, and other add-ons used for guns like rifles and long guns. They create and make their products by applying elements which are long lasting and durable. This includes the FUSION Rifle/Shotgun Rear Sight – Adjustable Bar-13 by FUSION. For additional shooting products, visit their website.
Rifle Scope Info
Rifle scopes permit you to exactly aim a rifle at various targets by lining up your eye with the target over a distance. They do this through magnifying the target by using a series of lenses inside the scope. The scope’s positioning can be adapted for the consideration of various ecological considerations 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 hit based on the sight picture you are viewing with the optic as you align the scope’s crosshair or reticle with the intended point of impact. The majority of modern-day rifle optics have around eleven parts which are located within and externally on the scope body. These scope parts consist of the rifle scope’s body, lenses, elevation dials, focus rings, and other components. See all eleven parts of a rifle optical system.
The Varieties of Rifle Scopes
Rifle scopes can be either “first focal plane” or “second focal plane” type of scopes. Choosing the optimal type of rifle optic is based around what type of shooting you plan on doing.
First Focal Plane Glass Facts
First focal plane optics (FFP) include the reticle in front of the zoom lens. This triggers the reticle to increase in size based on the extent of zoom being used. The outcome is that the reticle measurements are the same at the magnified distance as they are at the non magnified distance. As an example, one tick on a mil-dot reticle at 100 yards without any “zoom” is still the very same tick at one hundred yards using 5x “zoom”. These kinds of scopes are beneficial for:
- Quick acquisition, long distance types of shooting
- Shooting scenarios where estimations are small
- Experienced shooters who understand their target “hold over” as well as “lead” correlations for their rifles
- Shooters who don’t mind the reticle is enlarged and takes up more visual eyesight area than a SFP reticle
Second Focal Plane Scope Info
Second focal plane scopes (SFP) come with the reticle to the rear of the magnifying lens. This induces the reticle to remain at the same dimensions relative to the level of magnification being used. The end result is that the reticle dimensions evolve based on the zoom employed to shoot over longer distances due to the fact that the reticle markings present various increments which differ with the magnification. In the FFP illustration with the SFP optic, the 5x “zoom” 100 yard tick measurement would be 1/5th of the non “zoom” tick. These varieties of scopes are beneficial for:
- Far away kinds of shooting where shooters have extra time to make ballistic computations
- Shooting where most shots take place within shorter proximities and ranges
- Shooters who choose a clearer optic picture without space used up by the larger size FFP reticle
Magnification for Rifle Glass
The quantity of zoom a scope provides is determined by the diameter, thickness, and curvatures of the lenses inside of the rifle scope. The magnification of the scope is the “power” of the scope.
Fixed Single Power Lens Rifle Glass
A single power rifle optic or scope will have a magnification number designator like 4×32. This means the magnification power of the scope is 4x power while the objective lens is 32mm. The zoom of this type of optic can not change given that it is a set power scope.
Adjustable Power Lens Optics
Variable power rifle scopes use enhanced power. The power adjustment is achieved by making use of the power ring part of the scope near the back of the scope by the eye bell.
Power and Range
Here are some recommended scope power levels and the ranges where they can be effectively used. High power glass will not be as beneficial as lower magnification level optics due to the fact that too much zoom can be a negative aspect depending on your shooting distance. The same relates to longer distances where the shooter needs to have enough power to see where to properly aim the rifle.
Scope Lens Coating
All contemporary rifle scope and optic lenses are layered. Lens finish is a significant aspect of a rifle’s setup when considering high end rifle optics and scope setups.
ED Versus HD Rifle Optics
Some optic manufacturers even use “HD” or high-definition lense finishings which use different processes, rare earth compounds, polarizations, and elements to draw out separate color ranges and viewable target definition through the lens. This high-definition finish is typically used with increased density lens glass which lowers light’s capability to refract through the lens glass. Some scope suppliers use “HD” to refer to “ED” suggesting extra-low dispersion glass. ED deals with how colors are represented on the chromatic spectrum and the chromatic aberration or deviance which is similarly called color distortion or fringing. Chromatic aberration is often visible over objects with hard edges and outlines as light hits the object from specific angles.
Single Coating Versus Multi-Coating
Different optic lenses can also have different finishings applied to them. All lenses typically have at least some type of treatment or coating used to them before being used in a rifle scope or optic.
Single layered lenses have a treatment applied to them which is usually a protective and enhancing multi-purpose treatment. This lens treatment can safeguard the lens from scratches while lowering glare and other less beneficial 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 just how much you paid for it. Both are signs of the lens quality.
Some scope producers likewise make it a point to define if their optic lenses are coated or “multi” coated. This indicates the lens has several treatments applied to the surfaces. If a lens receives multiple treatments, it can establish that a manufacturer is taking multiple steps to fight various natural aspects like an anti-glare finish, a scratch resistant anti-abrasion covering, followed by a hydrophilic covering. This additionally does not always indicate the multi-coated lens is better than a single layered lens. Being “better” depends upon the producer’s lens treatment innovation and the quality of materials used in constructing the rifle optic.
Anti-water Finish for Scopes
Water on an optic’s lens does not improve maintaining a clear sight picture through a scope whatsoever. Numerous top of the line or premium scope producers will coat their lenses with a hydrophobic or hydrophilic coating. The Steiner Optics Nano-Protection is a good example of this sort of treatment. It deals with the exterior of the Steiner scope lens so the water particles can not bind to it or develop surface tension. The outcome is that the water beads sheet off of the scope to keep a clear, water free sight picture.
Alternatives for Installing Rifle Optics on Firearms
Installing approaches for scopes can be found in a couple of options. There are the standard scope rings which are individually mounted to the optic and one-piece mounts which cradle the scope. These various kinds of mounts also normally are made in quick release versions which use toss levers which enable rifle shooters to rapidly mount and remove the scope.
Rifle Scope Mounts with Hex Key Rings
Normal, clamp style mounting scope rings use hex head screws to mount to the flattop style Picatinny scope mount 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 is developed for long range accuracy shooting. This type of scope mount is perfect 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.
Quick-Release Cantilever Scope Ring Mounts
These kinds of quick-release rifle scope mounts can be used to quickly remove a scope from a rifle and reattach it to a different rifle. If they all use a similar style mount, a number of scopes can also be swapped out. The quick detach design is CNC crafted from anodized 6061 T6 aluminum and the mounting levers connect securely to a flat top design Picatinny rail. This lets the scope to be sighted in while on the rifle, taken off of the rifle, and remounted while keeping accuracy. These types of mounts come in beneficial for shooting platforms which are moved around a lot, to take off the scope glass from the rifle for protection, or for aiming systems which are utilized in between multiple rifles. An example of this mount type is the 30mm mount from the Vortex Optics manufacturer. It generally costs around $250 USD
What to Know About Rifle Glass Tube Sealing and Gas Purging
Wetness inside your rifle glass can mess up a day on the range and your highly-priced optic by causing fogging and generating residue inside of the scope tube. A lot of scopes prevent moisture from entering the scope tube with a system of sealing O-rings which are waterproof. Generally, these optics can be submerged underneath 20 or 30 feet of water before the water pressure can force moisture past the O-rings. This should be more than enough moisture prevention for common use rifles, unless you plan on taking your rifle on your motorboat and are concerned about the optic still performing if it goes overboard and you can still rescue the rifle.
Details on Glass Tube Gas Purging
Another element of preventing the buildup of wetness within the rifle scope’s tube is filling the tube with a gas like nitrogen. Since this area is currently taken up by the gas, the optic is less impacted by temperature level alterations and pressure variations from the outdoor environment which may possibly enable water vapor to seep in around the seals to fill the vacuum which would otherwise exist. These are good qualities of a decent rifle scope to look for.