Description
Rifle Scope Product Details
Vector Optics Sentinel 4-16x50mm, 1/4 MOA, 30 mm Tube, Red & Green Illuminated Second Focal Plane (SFP) Riflescope
Specifications:
Magnification: 4-16x
Objective Lens Dia.:50mm
Tube Dia.:30mm
Adjustment Click Value: 1/4 MOA
Reticle: MPR-3
Illumination: Red & Green
Ocular Dia: 44mm(1.7 inch)
Ocular Length: 67mm(2.6 inch)
Field of View: 24.4-7.0 Feet @ 100 yards
Eye Relief: 80-100mm (3.1-3.9 inch)
Exit Pupil: 3.1-12.5mm
Elevation Range: 55 MOA
Windage Range: 55 MOA
Lens Coating: Fully multicoated
Length: 340mm (13.4 inch)
Weight: 750g (26.5 ounce)
Finish: Matte
Battery: CR2032(EXCLUDED)
Distance between objective lens part and middle turret: 47mm (1.9 inch)
Length of middle turret part: 61mm (2.4 inch)
Distance between middle turret part to power ring: 42mm (1.6 inch)
Diopter compensation from fast-focus eyepiece (+2 to -2.5)
Features:
5 Years Warranty
30mm Monotube. 1/4 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 12 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.
Package Includes:
– 1 x 4-16×50 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.
1/4 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 12 Yard. Free 30mm mount rings, and lens covers.
About the Vector Optics Company
Vector Optics is a premium manufacturer for long gun scopes, optics, mounts, and other components used for firearms like rifles and long guns. They design and build their products by using building materials which are resilient and long lasting. This includes the Vector Optics Sentinel 4-16x50mm, 1/4 MOA, 30 mm Tube, Red & Green Illuminated Second Focal Plane (SFP) Riflescope by Vector Optics. For additional shooting items, visit their site.
Rifle Scope Info
Rifle scopes permit you to exactly align a rifle at various targets by lining up your eye with the target at range. They do this through magnification by utilizing a series of lenses within the scope. The scope’s positioning can be adjusted to take into account separate environmental elements like wind speed and elevation decreases to account for bullet drop.
The scope’s purpose is to help the shooter understand precisely where the bullet will land based upon the sight picture you are seeing with the optic as you align the scope’s crosshair or reticle with the intended point of impact. The majority of modern-day rifle scopes have about 11 parts which are located inside and on the exterior of the scope. These optic pieces include the rifle scope’s body, lenses, modification turrets, objective focus rings, and other elements. See all eleven parts of scopes.
Rifle Optic Varieties
Rifle scopes can be either “first focal plane” or “second focal plane” style of scopes. The style of focal plane an optic has identifies where the reticle or crosshair lies in regard to the scopes magnifying adjustments. It simply suggests the reticle is located behind or before the magnifying lens of the scope. Picking out the most suitable type of rifle glass is based upon what variety of hunting or shooting you anticipate undertaking.
First Focal Plane Optic Info
Focal plane scopes (FFP) include the reticle in front of the zoom lens. These styles of scopes are helpful for:
- Quick acquisition, long distance types of shooting
- Shooting situations where estimations are small
- Experienced shooters who understand their target “hold over” and also “lead” equations for their firearm
- Shooters who don’t mind the reticle is bigger and uses up more visual eyesight room than a SFP reticle
Second Focal Plane Glass
Second focal plane scopes (SFP) come with the reticle behind the magnifying lens. This induces the reticle to stay at the exact same overall size in relation to the quantity of magnification being used. The end result is that the reticle measurements adjust based upon the magnification employed to shoot over greater ranges considering the reticle measurements present different increments which fluctuate with the magnification. In the FFP illustration with the SFP glass, the 5x “zoom” 100 yard tick measurement would be 1/5th of the non “zoom” tick measurement. These styles of scopes work for:
- Long distance kinds of shooting where shooters have extra time to make ballistic calculations
- Shooting where most shots happen within much shorter ranges and distances
- Shooters who select a clearer optic sight picture without area taken up by the enlarged FFP reticle
About Scope Magnification
The measure of scope magnification you need on your optic is based on the type of shooting you intend to do. Practically every type of rifle scope supplies some degree of magnification. The amount of magnification a scope provides is determined by the dimension, thickness, and curvatures of the lens glass inside of the rifle scope. The zoom of the optic is the “power” of the opic. This indicates what the shooter is observing through the scope is amplified times the power aspect of what can typically be seen by human eyes.
Fixed Power Lens Optics
A single power rifle scope and optic will have a magnification number designator like 4×32. This suggests the magnification power of the scope is 4x power and the objective lens is 32mm. The magnification of this kind of optic can not adjust considering that it is fixed.
Variable Power Lens Glass Info
Variable power rifle scopes can be modified between magnified levels. The power modification is achieved by making use of the power ring part of the scope near the rear of the scope by the eye bell.
Scope Power and Ranges
Here are some advised scope power settings and the distances where they could be efficiently used. Remember that high magnification scopes will not be as efficient as lower magnification level scopes because too much zoom can be a bad thing. The exact same concept goes for extended distances where the shooter needs enough power to see exactly where to properly aim the rifle at the target.
Rifle Optic Lens Covering
All modern rifle scope lenses are covered in special coatings. There are different types and qualities of glass lens finishings. Lens covering can be an important element of a rifle’s setup when thinking about high-end rifle optics and targeting systems. The lenses are one of the most essential parts 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 and even improves anti glare from refracted direct sunlight and color discernibility.
HD Versus ED Optic Lens Coatings
Some scope manufacturers also use “HD” or high-definition lens coatings which use different processes, aspects, chemicals, and polarizations to draw out separate colors and viewable definition through the lens. Some scope manufacturers use “HD” to refer to “ED” indicating extra-low dispersion glass.
Single Finishing Versus Multi-Coating for Scopes
Various optic lenses can also have various coatings used to them. All lenses generally have at least some type of treatment or finish used to them before being used in a rifle scope or optic.
This lens treatment can offer protection to the lens from scratches while reducing glare and other less advantageous things experienced in the shooting environment while sighting in with the scope. The quality of a single layered lens depends on the scope manufacturer and how much you paid for it.
Some scope producers also make it a point to define if their optic lenses are layered or “multi” covered. Being “better” depends on the maker’s lens treatment innovation and the quality of materials used in constructing the rifle scope.
Info on Anti-water Finishing
Water on a lens does not help with maintaining a clear sight picture through a scope in any way. Many top of the line or premium optic makers will coat their lenses with a hydrophobic or hydrophilic finishing. The Steiner Optics Nano-Protection is a fine example of this type of treatment. It treats the exterior of the Steiner glass lens so the H2O particles can not bind to it or create surface tension. The result is that the water beads roll off of the scope to maintain a clear, water free sight picture.
Options for Mounting Scopes on Long Guns
Installing approaches for scopes can be found in a few options. There are the standard scope rings which are separately installed to the scope and one-piece scope mounts which cradle the scope. These various kinds of mounts also generally can be found in quick release versions which use manual levers which allow rifle operators to quickly mount and dismount the glass.
Hex Key Scope Rings
Basic, clamp-on style mounting optic rings use hex head screws to install to the flattop style Picatinny scope mounting rails on rifles. These varieties of scope mounts use a pair of detached rings to support the optic, and are usually constructed from 7075 T6 billet aluminum which are created for long distance precision shooting. This type of scope mount is good for rifles which are in need of a long lasting, unfailing mount which will not change regardless of just how much the scope is moved or abuse the rifle takes. These are the design of mounts you really want to have for a dedicated scope setup on a long distance scouting or hard target interdiction firearm which will rarely need to be modified or recalibrated. Blue 242 Loctite threadlocker can also be used on the scope mount screws to protect against the hex screw threads from wiggling out after they are mounted firmly in position. An example of these mounting rings are the 30mm style made by the Vortex Optics company. The set normally costs around $200 USD
Quick-Release Cantilever Scope Ring Mounts
These types of quick-release rifle scope mounts can be used to quickly take off a scope and attach it to a different rifle. Multiple scopes can also be switched out if they all use a compatible design mount. These types of mounts come in handy for long guns which are transported a lot, to swap out the optic from the rifle for protecting the scope, or for optics which are used in between multiple rifles.
Sealing and Gas Purging for Scope Tubes
Wetness inside your rifle scope can wreck a day of shooting and your highly-priced optic by causing fogging and making residue within the scope’s tube. A lot of optics prevent moisture from entering the optical tube with a system of sealing O-rings which are waterproof. Normally, these water-resistant optics can be submerged within 20 or 30 feet of water before the water pressure can force moisture past the O-rings. This should be sufficient wetness prevention for basic use rifles, unless you plan on taking your rifle sailing and are concerned about the scope still working if it goes overboard and you can still recover the firearm.
What to Know About Scope Tube Gas Purging
Another component of preventing the accumulation of moisture inside of the rifle optic tube is filling the tube with a gas like nitrogen. Because this space is already occupied by the gas, the scope is less altered by condition alterations and pressure differences from the external environment which might possibly enable water vapor to leak in around the seals to fill the void which would otherwise exist. These are good qualities of a decent rifle scope to look for.
