Description
Rifle Scope Product Details
Persei Tactical 4.5-27X50 First Focal Plane (FFP) Rifle Scope with Red Illuminated Mil Reticle and Adjustable Objective 30mm Tube Tactical Rifle Scope
New Item Number: 4.5X-27X
Lengthmm: 334mm
Objective Diameter (mm): 50mm
Eye Relief (mm): 86-102mm
Tube Diametermm: 30mm
Mechanical lightingSingle red lighting
Field of View(ft@100yd/m@100m): 40.88.4@100yds
Lens Color: Green film
Lens Coating: Multi Coated
Side rangeSide Parallax 10yds
W/E ( Click Value): 1/10 M.O.A.
Weightg: 751g
Accessories: 6063
Rifle Scope Product Features
30mm Tube size allows more light transfered and bigger field of view.6 times optical design bring you a big power range, Full Multi-Coated optics brings a very clear and sharp image.
Quick Focus Eyepiece and 1/10 MIL Push-Zero Lock turrets make it easier to zero your scope and lock the zero .Powered by a single CR2032 battery and can be adjusted between 6 brightness settings.
High precision tactical rifle scope with 4.5-27x magnification, a 50mm objective lens, and an eye relief of 3.5-4 inches.
First focal plane reticle stays valid at all power settings allowing you to fully utilize the specially designed reticle that shrinks or grows along with your target as you zoom in or out.
A side mounted parallax adjust knob keeps the reticle parallax free and the target image sharp at extended ranges. This tough scope is shockproof, waterproof, and fog resistant.
About the Persei Company
Persei is a premium producer for rifle scopes, optics, mounts, and other add-ons used for firearms like rifles and long guns. They style and build their mounts, scopes, and related products by using building materials which are durable and long lasting. This includes the Persei Tactical 4.5-27X50 First Focal Plane (FFP) Rifle Scope with Red Illuminated Mil Reticle and Adjustable Objective 30mm Tube Tactical Rifle Scope by Persei. For more shooting items, visit their site.
Info Rifle Optics
Rifle scopes permit you to exactly aim a rifle at different targets by aligning your eye with the target over a range. They accomplish this through magnification by making use of a set of lenses inside the scope. The scope’s alignment can be adapted to account for many environmental aspects like wind and elevation decreases to account 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 through the scope as you line up the scope’s crosshair or reticle with the target. Many modern rifle optics have about 11 parts which are located inside and on the exterior of the scope. These parts consist of the rifle scope’s body, lenses, windage turrets, focus rings, and other parts. See all eleven parts of a scope.
The Styles of Rifle Scopes
Rifle scopes can be either “first focal plane” or “second focal plane” type of optics. Picking the optimal type of rifle scope depends on what type of shooting you plan to do.
Info on First Focal Plane Scopes
Focal plane scopes (FFP) feature the reticle in front of the magnification lens. This causes the reticle to increase in size based upon the amount of magnification being used. The benefit is that the reticle measurements are the same at the amplified range as they are at the non magnified range. For instance, one tick on a mil-dot reticle at 100 yards with no “zoom” is still the same tick at one hundred yards with 5x “zoom”. These kinds of scopes are valuable for:
- Quick acquisition, long distance types of shooting
- Shooting situations where estimations are minimal
- Experienced shooters who have an idea for their target “hold over” as well as “lead” relationships for their weapon
- Shooters who don’t mind the reticle is bigger and occupies more visual sight room than a SFP reticle
Second Focal Plane Optics
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 measurement would be 1/5th of the non “zoom” tick reticle measurement.
- Long distance forms of shooting where shooters have increased time to make ballistic calculations
- Shooting where most of the shots take place within shorter proximities and ranges
- Shooters who desire a clearer optic picture with less room used up by the bigger FFP reticle
Zoom for Scopes
The amount of scope zoom you need on your scope is based on the type of shooting you like to do. Practically every type of rifle scope delivers some amount of magnification. The amount of magnification a scope gives is determined by the size, density, and curves of the lenses inside of the rifle optic. The magnifying level of the scope is the “power” of the opic. This implies what the shooter is observing through the scope is magnified times the power element of what can typically be seen by human eyes.
Info About Single Power Lens Optics
A single power rifle optic will have a magnification number designator like 4×32. This means the zoom power of the scope is 4x power and the objective lens is 32mm. The magnification of this kind of scope can not fluctuate because it is a fixed power scope.
Variable Power Lens Glass Details
Variable power rifle scopes use variable power levels. The power change is performed by making use of the power ring part of the scope near the back of the scope by the eye bell.
The Power Level and Range of Rifle Glass
Here are some recommended scope power settings and the ranges where they could be efficiently used. Highly magnified glass will not be as beneficial as lower powered scopes due to the fact that too much zoom can be a negative aspect depending on your shooting distance. The same concept goes for longer distances where the shooter needs to have enough power to see exactly where to properly aim the rifle at the target.
Details on Rifle Scope Lens Coverings
All modern rifle scope lenses are covered in special coatings. There are different types and qualities of glass lens finishes. Lens finishing can be a crucial element of a rifle’s setup when thinking about luxury rifle optics and targeting equipment. The lenses are one of the most important parts of the scope as they are what your eye looks through while sighting a rifle in on the point of impact. The finishing on the lenses offers protection to the lens surface and also helps with anti glare capabilities from excess direct sunlight and color recognition.
ED Versus HD Glass
Some scope brands also use “HD” or high-definition lens coverings which use various methods, chemicals, aspects, and polarizations to draw out different colors and viewable quality through the lens. Some scope producers use “HD” to refer to “ED” indicating extra-low dispersion glass.
Info on Single Coating Versus Multi-Coating
Different optic lenses can even have various finishes applied to them. All lenses usually have at least some type of treatment or finishing applied to them before they are used in a rifle scope or optic. This is because the lens isn’t simply a raw piece of glass. It becomes part of the finely tuned optic. It requires a coating to be applied to it so that it will be optimally usable in lots of types of environments, degrees of sunlight (full VS shade), and other shooting conditions.
This lens treatment can protect 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 coated lens depends on the scope maker 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 multiple treatments, it can establish that a company is taking numerous actions to fight different environmental aspects like an anti-glare covering, a scratch resistant anti-abrasion finishing, followed by a hydrophilic finishing. This also does not always imply the multi-coated lens will perform better than a single layered lens. Being “better” is dependent on the maker’s lens treatment solutions and the quality of components used in developing the rifle scope.
Anti-water Coating for Rifle Glass
Water on a lens does not assist with keeping a clear sight picture through a scope at all. Many top of the line and high-end optic makers will coat their lenses with a hydrophilic or hydrophobic covering which is water repellent.
Alternatives for Installing Rifle Scopes on Long Guns
Mounting solutions for scopes are available in a few options. There are the standard scope rings which are individually mounted to the scope and one-piece mounts which cradle the scope. These various kinds of mounts also normally can be found in quick release variations which use throw levers which permit rifle shooters to quickly install and dismount the glass.
Hex Key Rifle Scope Ring Mounts
Standard, clamp style mounting optic rings use hex head screws to fix to the flattop design Picatinny scope mounting rails on the tops of rifles. These styles of scope mounts use two individual rings to support the scope, and are normally made from 7075 T6 billet aluminum or similar materials which are created for far away precision shooting. This form of scope mount is excellent for rifles which need to have a durable, rock solid mount which will not shift no matter how much the scope is moved or jarring the rifle takes. These are the type of mounts you really want to have for a specialized optics system on a far away scouting or competition long gun that will seldom need to be changed or adjusted. Blue 242 Loctite threadlocker can also be used on the screws to stop the hex screws from backing out after they are mounted securely in position. An example of these rings are the 30mm style made by the Vortex Optics brand. The set typically costs around $200 USD
Quick-Release Cantilever Optic Rings
These types of quick-release rifle scope mounts can be used to quickly take off a scope and connect it to a different rifle. Multiple scopes can even be switched out if they all use a compatible design mount. These types of mounts come in handy for long guns which are transferred a lot, to remove the optic from the rifle for protection, or for optics which are used in between multiple rifles or are situationally focused.
Sealing and Gas Purging for Rifle Optic Tubes
Wetness inside your rifle scope can ruin a day on the range and your expensive optic by resulting in fogging and producing residue within the scope tube. The majority of scopes protect against wetness from going into the optical tube with a series of sealing O-rings which are water resistant. Generally, these scopes can be immersed under 20 or 30 feet of water before the water pressure can force moisture past the O-rings. This should be ample wetness avoidance for basic use rifles, unless you intend on taking your rifle on boats and are concerned about the optic still functioning if it goes over the side and you can still retrieve the firearm.
Gas Purged Scope Tubes
Another element of avoiding the buildup of moisture within the rifle scope tube is filling the tube with a gas like nitrogen. Given that this area is currently occupied by the gas, the scope is less influenced by temp changes and pressure variations from the outside environment which could potentially allow 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 seek out.
