Description
Rifle Scope Product Details
Vector Optics Sentinel 10-40x50mm, 1/8 MOA, 30 mm Tube, Red & Green Illuminated Second Focal Plane (SFP) Riflescope
Specifications:
Magnification: 10-40x
Objective Lens Dia.:50mm
Tube Dia.:30mm
Adjustment Click Value: 1/8 MOA
Reticle: Etched Glass MPR-3
Illumination: Red & Green
Ocular Dia: 44mm(1.7 inch)
Ocular Length: 67mm(2.6 inch)
Field of View: 3.8-1.1° @ 100 yards
Eye Relief: 92-85mm (3.6-3.3 inch)
Exit Pupil: 5.0-1.25mm
Elevation Range: 45 MOA
Windage Range: 45 MOA
Lens Coating: Fully multicoated
Length: 405mm (16 inch)
Weight: 745g (26.3ounce)
Finish: Matte
Battery: CR2032(EXCLUDED)
Distance between objective lens part and middle turret: 77mm (3.0 inch)
Length of middle turret part: 38mm (1.5 inch)
Distance between middle turret part to power ring: 56mm (2.2 inch)
Diopter compensation from fast-focus eyepiece (+1.5 to -2.0)
Features:
5 Years Warranty
30mm Monotube. 1/8 MOA windage and elevation adjustments for fine-tuning accuracy.
The reticle is red and green illuminated along the second focal plane.
The illunimation has stepless brightness.
Turret lock feature: Pull to adjust, press to lock.
Side Focus starts at 10 Yard.
Fast-focus Eyepiece for quick and easy reticle focusing
O-ring Sealed and Nitrogen Purged Ensure Water Resistance and Fog Proof performance; Shockproof to 750g.
High quality 6061 T6 aircraft grade aluminum alloy with durable black matte finish.
Side focus mark: 10, 20, 25, 30, 40, 50, 60, 75, 100, 150, 200, 500 and infinite.
Package Includes:
– 1 x 10-40×50 Riflescope
– 2 x 30mm weaver mount ring (default) or dovetail mount ring (on request only)
– 1 x Lens Cover
– 1 x Cleaning cloth
Note: We offer 5 YEARS WARRANTY. Please feel free to contact us if you have any interests or product issues, we are available 24/7 online.
Rifle Scope Product Features
5 years warranty.
Optics hold zero. The reticle is red and green illuminated along the second focal plane. The illunimation has stepless brightness.
1/8 MOA windage and elevation adjustments for fine-tuning accuracy. Turret lock sytem. Pull to adjust, press to lock.
O-ring Sealed and Nitrogen Purged Ensure Water Resistance and Fog Proof performance; Shockproof to 750g.
Side Focus starts at 10 Yard. Free 30mm mount rings, and lens covers.
About the Vector Optics Brand
Vector Optics is a premium company for firearm scopes, optics, mounts, and other accessories used for firearms like rifles and long guns. They design and supply their mounts, scopes, and related products choosing elements which are long lasting and durable. This includes the Vector Optics Sentinel 10-40x50mm, 1/8 MOA, 30 mm Tube, Red & Green Illuminated Second Focal Plane (SFP) Riflescope by Vector Optics. For more shooting items, visit their site.
What You Need to Know About Rifle Glass
Rifle scopes permit you to precisely align a rifle at different targets by aligning your eye with the target over a distance. They do this through zoom using a set of lenses inside the scope. The scope’s positioning can be adapted to account for separate natural aspects like wind and elevation decreases to account for bullet drop.
The scope’s function is to help the shooter understand exactly where the bullet will hit based upon the sight picture you are seeing through the optic as you line up the scope’s crosshair or reticle with the intended point of impact. Most contemporary rifle scopes have around 11 parts which are located within and outside of the optic. These scope parts consist of the rifle scope’s body, lenses, windage turrets, objective focus rings, and other components. Learn about the eleven parts of optics.
Rifle Glass Styles
Rifle scopes can be either “first focal plane” or “second focal plane” kind of scopes. The style of focal plane an optic has establishes where the reticle or crosshair is located in connection with the scopes magnifying adjustments. It literally suggests the reticle is situated behind or in front of the magnification lens of the optic. Deciding on the very best type of rifle glass is based upon what style of shooting or hunting you anticipate undertaking.
First Focal Plane Glass Info
First focal plane optics (FFP) come with the reticle in front of the magnifying lens. This causes the reticle to increase in size based upon the amount of zoom being used. The benefit is that the reticle measurements are the same at the amplified range as they are at the non amplified range. As an example, one tick on a mil-dot reticle at one hundred yards without “zoom” is still the corresponding tick at 100 yards with 5x “zoom”. These types of scopes work for:
- Quick acquisition, long distance kinds of shooting
- Shooting circumstances where calculations are low
- Experienced shooters who know their aim point “hold over” plus “lead” relationships for their firearm
- Shooters who do not mind the reticle is enlarged and occupies more visual sight space than a SFP reticle
Info About Second Focal Plane Optics
Second focal plane optics (SFP) come with the reticle to the rear of the zoom lens. This causes the reticle to stay at the very same size in connection with the quantity of magnification being used. The final result is that the reticle dimensions adapt based on the zoom used to shoot over lengthier ranges since the reticle measurements present different increments which change with the magnification level. In the FFP illustration with the SFP glass, the 5x “zoom” one hundred yard tick measurement would be 1/5th of the non “zoom” tick. These particular types of glass work for:
- Far away types of shooting where shooters have additional time to make ballistic calculations
- Shooting where most of the shots happen within much shorter distances and ranges
- Shooters who desire a clearer optic sight picture with less space used up by the enlarged FFP reticle
Details on Optic Zoom
The quantity of scope magnification you need depends upon the kind of shooting you desire to do. Nearly every style of rifle scope gives some amount of magnification. The amount of magnification a scope supplies is determined by the dimension, density, and curves of the lens glass inside of the rifle scope. The magnifying level of the scope is the “power” of the scope. This denotes what the shooter is checking out through the scope is amplified times the power element of what can usually be seen by human eyes.
Fixed Single Power Lens Optics
A single power rifle optic and scope comes with 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 scope can not adjust since it is set from the factory.
Variable Power Lens Rifle Optics
Variable power rifle scopes can be adjusted between magnification levels. It will note the magnification amount in a configuration such as 2-10×32. These numbers mean the magnification of the scope could be set between 2x and 10x power. This always incorporates the power levels in-between 2 and 10. The power modification is achieved utilizing the power ring component of the scope near the back of the scope by the eye bell.
The Power Level and Range Correlation of Glass
Here are some advised scope power settings and the distances where they may be efficiently used. Consider that high power scopes will not be as effective as lower magnification level scope and optics because too much magnification can be a bad thing. The same goes for extended ranges where the shooter needs enough power to see exactly where to best aim the rifle at the target.
Lens Coating for Rifle Optics
All current rifle scope and optic lenses are layered. Lens finishing is an essential element of a shooting platform when considering high end rifle optics and scope equipment.
About Rifle Optic Lens Coatings – HD Versus ED
Some optic producers also use “HD” or high-definition lens finishings which apply various processes, polarizations, components, and chemicals to draw out a wide range of colors and viewable target definition through lenses. This HD finishing is frequently used with higher density glass which lowers light’s ability to refract by means of the lens glass. Some scope manufacturers use “HD” to describe “ED” implying extra-low dispersion glass. ED deals with how colors are presented on the chroma spectrum and the chromatic aberration or difference which is similarly called color distortion or fringing. Chromatic aberration can be obvious over items with defined shapes as light hits the item from specific angles.
Single Glass Lens Finishing Versus Multi-Coating
Various scope lenses can even have different coatings applied to them. All lenses normally have at least some kind of treatment or coating applied to them before being used in a rifle scope or optic. Due to the fact that the lens isn’t simply a raw piece of glass, they require performance enhancing coatings. It becomes part of the finely tuned optic. It must have a coating applied to it so that the lens will be optimally functional in numerous types of environments, degrees of sunlight (full VS shaded), and other shooting conditions.
This lens treatment can safeguard the lens from scratches while minimizing glare and other less useful things experienced in the shooting environment while sighting in with the scope. The quality of a single covered lens depends on the scope producer and how much you paid for it.
Some scope producers similarly make it a point to define if their optic lenses are coated or “multi” coated. Being “better” depends on the maker’s lens treatment technology and the quality of products used in developing the rifle scope.
Optic Lens Anti-water Finishing
Water on an optic’s lens doesn’t improve keeping a clear sight picture through an optic in any way. Numerous top of the line or high-end optic makers will coat their lenses with a hydrophilic or hydrophobic finish. The Steiner Optics Nano-Protection is a good example of this sort of treatment. It treats the exterior of the Steiner scope lens so the water molecules can not bind to it or create surface tension. The result is that the water beads slide off of the scope to preserve a clear, water free sight picture.
Rifle Glass Mounting Options
Mounting solutions for scopes come in a couple of options. There are the basic scope rings which are individually mounted to the optic and one-piece mounts which cradle the scope. These various kinds of mounts also generally can be found in quick release variations which use manual levers which allow rifle operators to quickly mount and remove the optics.
Hex Key Optic Rings
Standard, clamp-on style mounting optic rings use hex head screws to mount to the flattop design Picatinny scope mounting rails on the tops of rifles. These types of scope mounts use double independent rings to support the scope, and are made from 7075 T6 billet aluminum which are created for far away precision shooting. This kind of scope mount is ideal for rifles which are in need of a resilient, hard use mount which will not move despite just how much the scope is moved or jarring the rifle takes. These are the type of mounts you want for a specialized scope system on a reach out and touch someone hunting or interdiction long gun which will rarely need to be changed or recalibrated. Blue 242 Loctite threadlocker can also be used on screws to keep the hex screw threads from backing out after they are mounted securely in place. An example of these rings are the 30mm style from 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 rapidly connect and remove a scope from a rifle before reattaching it to a different rifle. Several scopes can even be swapped out if they all use a similar design mount. These types of mounts are convenient for rifles which are transported a lot, to swap out the optic from the rifle for protection, or for optics which are used in between numerous rifles.
Scope Tube Sealing and Gas Purging
Wetness inside your rifle glass can ruin a day of shooting and your expensive optic by inducing fogging and developing residue inside of the scope tube. The majority of optics prevent humidity from getting in the optical tube with a series of sealing O-rings which are waterproof. Generally, these water-resistant 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 plenty of wetness prevention for basic use rifles, unless you plan on taking your rifle aboard a watercraft and are worried about the scope still functioning if it goes overboard and you can still find the firearm.
What to Know About Rifle Optic Tube Gas Purging
Another element of preventing the buildup of moisture 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 glass is less impacted by climate changes and pressure distinctions from the external environment which could potentially enable water vapor to seep in around the seals to fill the vacuum which would otherwise be there. These are good qualities of a good rifle scope to seek out.
