Last update on September 25, 2023 // Source: Amazon API
Rifle Scope Product Details
TPO ST 4-16×50 Scope Combo Includes Laser Sight and Holographic Dot Sight
4-16x50AO FLASHLIGHT RED LASER RED DOT
Red Laser Sight Laser class: IIIa
Maximum Output Power: 5 mw
Tube Diameter: 16mm
Weight (Ounce): 25
Length (Inch): 13
Tube Size (mm): 30
Eye Relief (inch): 3.4~3
Exit Pupil (mm): 10~3.3
Field of View @100 Yards (feet): 27~10
1 Click @100Yards (inch): 1/4
Adjustment Rang: 30
Fog Proof: YES
Shock Proof: YES
Water Proof: YES
Rifle Scope Product Features
Three Parts with More Functions-Plus With holographic dot sight and red laser is good for quick acquisition of close quarter and fast moving targets with about 200-500m for the distance.
Crystal clear multi-coated lens for excellent glare reflection and maximum light transmission, Reticle illumination in both red and green with multiple brightness intensities
30mm tube size, Capped reset turrets are finger adjustable with 1/4 MOA clicks that can be reset to zero after sighting in.
The windage and elevation turrets offer 30 MOA either side of optical center set with our easy to use lift, adjust, press down to lock design that is highly accurate and durable with re-zeroable turrets.
100% Fogproof, waterproof and shockproof, 1000G shockproof test before release.
About the TPO Manufacturer
TPO is a premium supplier for weapon scopes, optics, mounts, and other add-ons used for guns like rifles and long guns. They create and build their scopes, mounts, and related products working with building materials which are long lasting and resilient. This includes the TPO ST 4-16×50 Scope Combo Includes Laser Sight and Holographic Dot Sight by TPO. For more shooting items, visit their site.
What You Need to Know About Glass
Rifle scopes allow you to specifically align a rifle at different targets by lining up your eye with the target over a distance. They accomplish this through zoom by employing a set of lenses inside the scope. The scope’s positioning can be adapted to account for numerous environmental aspects like wind and elevation to make up for bullet drop.
The scope’s function is to help the shooter understand exactly where the bullet will land based on the sight picture you are viewing using the scope as you align the scope’s crosshair or reticle with the target. A lot of modern rifle scopes and optics have about eleven parts which are located inside and outside of the scope. These parts include the rifle scope’s body, lenses, windage turrets or dials, objective focus rings, and other components. Learn about the eleven parts of scopes.
Rifle Scope Varieties
Rifle scopes can be either “first focal plane” or “second focal plane” type of scopes. The sort of focal plane an optic has decides where the reticle or crosshair is located in relation to the scopes magnification. It actually means the reticle is located behind or in front of the magnification lens of the scope. Deciding upon the most desired kind of rifle glass depends upon what style of shooting you anticipate doing.
About First Focal Plane Glass
Focal plane scopes (FFP) come with the reticle in front of the zoom lens. This causes the reticle to increase in size based upon the level of zoom being used. The outcome is that the reticle measurements are the same at the amplified distance as they are at the non magnified distance. One tick on a mil-dot reticle at 100 yards with no “zoom” is still the identical tick at 100 yards by using 5x “zoom”. These kinds of scopes work for:
- Quick acquisition, long distance types of shooting
- Shooting situations where computations are minimal
- Experienced shooters who understand their target “hold over” and also “lead” equations for their firearms
- Shooters who don’t mind the reticle is bigger and occupies more visual sight room than a SFP reticle
About Second Focal Plane Optics
Second focal plane optics (SFP) include the reticle to the rear of the zoom lens. This induces the reticle to remain at the same size in relation to the level of magnification being used. The end result is that the reticle dimensions change based upon the zoom applied to shoot over lengthier distances because the reticle measurements represent various increments which vary with the zoom. In the FFP illustration with the SFP scope, the 5x “zoom” one hundred yard tick would be 1/5th of the non “zoom” tick measurement. These types of optics are useful for:
- Long distance styles of shooting where shooters have extra time to make ballistic calculations
- Shooting where most of the shots happen within much shorter ranges and spaces
- Shooters who prefer a clearer optic picture without room used up by the bigger FFP reticle
Magnification for Rifle Glass
The measure of scope zoom you need depends upon the kind of shooting you choose to do. Pretty much every type of rifle glass supplies some level of zoom. The quantity of zoom a scope delivers is identified by the diameter, density, and curvatures of the lenses within the rifle scope. The magnifying level of the optic is the “power” of the glass. This means what the shooter is looking at through the scope is amplified times the power element of what can normally be seen by human eyes.
Fixed Power Lens Glass Info
A single power rifle optic uses a zoom number designator like 4×32. This suggests the magnification power of the scope is 4x power while the objective lens is 32mm. The zoom of this type of scope can not fluctuate because it is a fixed power optic.
Adjustable Power Lens Rifle Optic Facts
Variable power rifle scopes can be tweaked between magnified levels. The power modification is performed using the power ring part of the scope near the rear of the scope by the eye bell.
Rifle Glass Power Level and Ranges
Here are some advised scope power levels and the ranges where they could be successfully used. Highly magnified glass will not be as effective as lower magnification scopes because too much zoom can be a bad thing. The same idea applies to longer ranges where the shooter needs to have enough power to see where to best aim the rifle.
Lens Finishing for Glass
All modern rifle scope and optic lenses are layered. There are various types and qualities of glass finishes. When shopping for high end rifle optics and scope units, Lens finishing can be a critical aspect of defining the capability of the rifle. The glass lenses are among the most critical components of the glass considering they are what your eye sees through while sighting a rifle in on the target. The finish on the lenses offers protection to the lens surface area and also assists with anti glare capabilities from refracted sunrays and color discernibility.
ED Versus HD Rifle Scopes
Some scope producers also use “HD” or high-definition lens finishes which use different techniques, polarizations, chemicals, and elements to draw out separate colors and viewable quality through the lens. Some scope producers use “HD” to refer to “ED” meaning extra-low dispersion glass.
Single Finishing Versus Multi-Coating for Scopes
Different optic lenses can even have different finishes applied to them. All lenses typically have at least some kind of treatment or coating applied to them before they are used in a rifle scope or optic assembly. This is due to the fact that the lens isn’t just a raw piece of glass. It is part of the carefully tuned optic. It needs to have a coating applied to it so that the lens will be efficiently usable in numerous types of environments, degrees of light (full VS shade), and other shooting conditions.
This lens treatment can safeguard the lens from scratches while lowering 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 manufacturer and how much you paid for it.
Some scope makers also make it a point to specify if their optic lenses are layered or “multi” coated. Being “much better” depends on the producer’s lens treatment innovation and the quality of products used in constructing the rifle scope.
Anti-water Lens Finish
Water on a scope lens doesn’t improve preserving a clear sight picture through an optic whatsoever. Many top of the line and premium optic makers will coat their lenses with a hydrophobic or hydrophilic covering. The Steiner Optics Nano-Protection is a fine example of this kind of treatment. It deals with the exterior surfaces of the Steiner optic lens so the H2O molecules can not bind to it or produce surface tension. The outcome is that the water beads move off of the scope to preserve a clear, water free sight picture.
Rifle Glass Mounting Choices
Mounting options for scopes can be found in a couple of options. There are the basic scope rings which are separately installed to the optic and one-piece mounts which cradle the scope. These various kinds of mounts also typically are made in quick release variations which use manual levers which enable rifle shooters to rapidly install and dismount the scopes.
Rifle Scope Mounting Solutions 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 a couple of different rings to support the optic, and are often made from 7075 T6 billet aluminum which are created for long range accuracy shooting. This type of scope install is perfect for rifles which require a resilient, rock solid mounting solution which will not move no matter how much the scope is moved or abuse the rifle takes.
Rifle Optic Mounts with Quick-Release Cantilever Rings
These types of quick-release rifle scope mounts can be used to rapidly take off a scope and connect it to a different rifle. Numerous scopes can also be switched out if they all use a compatible design mount. These types of mounts are handy for rifles which are transported a lot, to remove the optic from the rifle for protecting the scope, or for optics which are used between numerous rifles or are situationally focused.
Info Around Rifle Glass Tube Sealing and Gas Purging
Wetness inside your rifle scope can ruin a day of shooting and your expensive optic by triggering fogging and creating residue inside of the scope tube. Many scopes avoid wetness from going into the scope tube with a system of sealing O-rings which are water resistant.
Gas Purged Rifle Optic Tubes
Another element of preventing the buildup of moisture inside of the rifle optic tube is filling the tube with a gas like nitrogen. Given that this area is currently occupied by the gas, the optic is less influenced by condition changes and pressure distinctions from the external environment which might possibly allow water vapor to seep in around the seals to fill the void which would otherwise be there. These are good qualities of a good rifle scope to seek out.