Description
Rifle Scope Product Details
DB TAC INC Presma EX Professional Series 4X40 Precision Scope, Red,Green,Blue Color RXR Reticle
Selectable 11 brightness adjustment control lets the user adapt to different terrains and temperatures.
Automated shut down power to conserve battery’s life and memorize the last reticle color and brightness position when the power is on.
Mounted level bubble on the rear of tube provides tool of stability level.
And comes with a bonus sunshade to block unwanted lights allowing user to see target with more clear result.
Presma EX series scopes are CNC machined from one piece of 6061-T6 aluminum and hard anodized against corrosion with a black matte finish;
Sealed O-ring and Argon filled for waterproof, fogproof and shock proof performance.
This compact design makes easy maneuvering possible in real hunting and shooting activities.
Featuring a high quality fully multi-coated lens, Presma EX series Riflescope forms clear, bright and sharp sight image edge to edge.
Superior quality precision lens elements.
Aluminum 6061-T6 tube with scratch resistant hard-coat anodized black matte finish.
Built on strong cardan joint platform to fulfill the most demanding outdoor requirement.
Fully multicoated lenses with advantage solution for maximum light transmission.
Completely sealed and Argon filled.
100% shockproof, Fog-proofed; water-proofed.
Flip open lens covers.
2.5″ sunshade included.
Mag X:4X
Length: 10.6 inch
Weight: 15 oz
1 Click: 1/4 MOA
Obj. Dia.: 40 mm
Reticle Style: RXR
Exit Pupil: 10 mm
FOV (Ft / 100Yds): 30
Tube Dia.: 1 inch
W/E Adj. Value: 40 MOA
Eye Relief: 4.9 inch
Parallax (Yds): 100
Battery: CR2032
Diopter range: -2.5D/+3D
Rifle Scope Product Features
One piece scope ring mount with quick release bottom.
11 levels of Red, Green, Blue illuminated reticle.
Illumination adjustment memorizes last level of selection.
RXR estimate reticle.
Integrated level bubble.
About the DB TAC INC Company
DB TAC INC is a premium producer for long gun scopes, optics, mounting solutions, and other components used for guns like rifles and long guns. They create and supply their scopes and related products by applying elements which are long lasting and resilient. This includes the DB TAC INC Presma EX Professional Series 4X40 Precision Scope, Red,Green,Blue Color RXR Reticle by DB TAC INC. For additional shooting items, visit their site.
Info Optics
Rifle scopes permit you to precisely aim a rifle at different targets by aligning your eye with the target at range. They do this through zoom using a set of lenses inside the scope. The scope’s alignment can be dialed in for the consideration of numerous ecological factors like wind speed and elevation decreases to make up for bullet drop.
The scope’s purpose is to help shooters understand precisely where the bullet will land based on the sight picture you are seeing through the optic as you align the scope’s crosshair or reticle with the intended target. Many contemporary rifle optics have around 11 parts which are located internally and outside of the scope. These scope parts consist of the rifle scope’s body, lenses, modification turrets, focus rings, and other parts. Learn about the eleven parts of rifle scopes.
Rifle Glass Styles
Rifle scopes can be either “first focal plane” or “second focal plane” type of scopes. Going for the best type of rifle glass is based around what type of shooting you plan to do.
First Focal Plane Glass Info
First focal plane scopes (FFP) include the reticle ahead of the magnifying lens. This triggers the reticle to increase in size based on the level of magnification being used. The result is that the reticle measurements are the same at the enhanced range as they are at the non magnified distance. One tick on a mil-dot reticle at one hundred yards with no “zoom” is still the very same tick at 100 yards by using 5x “zoom”. These types of scopes are valuable for:
- Quick acquisition, far away types of shooting
- Shooting situations where calculations are marginal
- Experienced shooters who know their aim point “hold over” and “lead” correlations for their weapon
- Shooters who do not mind the reticle is enlarged and uses up more visual eyesight area than a SFP reticle
Info on Second Focal Plane Scopes
Second focal plane scopes (SFP) come with the reticle to the rear of the magnification lens. This induces the reticle to remain at the very same dimensions in relation to the level of zoom being used. The final result is that the reticle dimensions shift based on the magnification used to shoot over greater ranges considering that the reticle markings represent different increments which can vary with the zoom. In the FFP illustration with the SFP optic, the 5x “zoom” one hundred yard tick measurement would be 1/5th of the non “zoom” tick measurement. These particular styles of scopes work for:
- Long distance types of shooting where shooters have increased time to make ballistic estimations
- Shooting where most shots occur within much shorter ranges and spaces
- Shooters who choose a clearer optic picture without area used up by the enlarged FFP reticle
Ins and Outs of Rifle Optic Zoom
The amount of zoom a scope provides is identified 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 Power Lens Rifle Glass Details
A single power rifle scope and optic uses a zoom number designator like 4×32. This indicates the magnification power of the scope is 4x power and the objective lens is 32mm. The zoom of this type of optic can not fluctuate since it is fixed.
Variable Power Lens Rifle Optic Details
Variable power rifle scopes use variable power levels. The power modification is handled by making use of 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 powers and the distances where they may be efficiently used. Always remember that higher power glass will not be as efficient as lower powered optics and scopes because too much magnification can be a detractor. The exact same idea relates to extended distances where the shooter needs sufficient power to see exactly where to best aim the rifle at the target.
Details on Scope Lens Finishing
All top teir rifle optic and scope lenses are layered. Lens covering can be an essential element of a shooting platform when purchasing high end rifle optics and scope setups.
About Scope Lens Coatings – HD Versus ED
Some glass companies even use “HD” or high-definition lense coverings that take advantage of different processes, components, compounds, and polarizations to extract various colors and viewable target definition through the lens. This HD coating is normally used with more costly, high density glass which decreases light’s chance to refract by means of the lens glass. Some scope vendors use “HD” to refer to “ED” suggesting extra-low dispersion glass. ED handles how colors are presented on the chroma spectrum and the chromatic aberration which is similarly called color distortion or fringing. Chromatic aberration may be obvious over items with well defined shapes as light hits the object from specific angles.
Single Coating Versus Multi-Coating
Various optic lenses can even have various finishings applied to them. All lenses generally have at least some kind of treatment or finishing applied to them prior to being used in a rifle scope or optic assembly. This is due to the fact that the lens isn’t simply a raw piece of glass. It is part of the carefully tuned optic. It must have a covering applied to it so that it will be efficiently usable in lots of types of environments, degrees of light (full light VS shaded), and other shooting conditions.
This lens treatment can safeguard the lens from scratches while minimizing glare and other less helpful things experienced in the shooting environment while sighting in with the scope. The quality of a single layered lens depends on the scope maker and how much you paid for it.
Some scope producers also make it a point to define if their optic lenses are coated or “multi” coated. Being “better” depends on the producer’s lens treatment technology and the quality of products used in building the rifle scope.
Anti-water Lens Finishes
Water on a scope’s lens doesn’t improve preserving a clear sight picture through a scope whatsoever. Numerous top of the line or premium optic producers will coat their lenses with a hydrophilic or hydrophobic finishing. The Steiner Optics Nano-Protection is a good example of this kind of treatment. It provides protection for the surface area of the Steiner scope lens so the H2O molecules can not bind to it or create surface tension. The result is that the water beads slide off of the scope to keep a clear, water free sight picture.
Rifle Glass Installing Choices
Installing options for scopes can be found in a few options. There are the basic scope rings which are individually mounted to the scope and one-piece mounts which cradle the scope. These various kinds of mounts also normally come in quick release variations which use throw levers which enable rifle shooters to quickly install and dismount the scope.
Hex Key Rifle Optic Ring Mounts
Standard, clamp style 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 two different rings to support the optic, and are often made from 7075 T6 billet aluminum which are created for long range precision shooting. This type of scope install is wonderful for rifles which need a resilient, sound mount which will not move no matter how much the scope is moved or abuse the rifle takes.
Quick-Release Cantilever Rifle Optic Rings
These types of quick-release rifle scope mounts can be used to rapidly attach and take off a scope from a rifle. If they all use a comparable style mount, multiple scopes can also be swapped out on the range. The quick detach design is CNC machined from anodized 6061 T6 aluminum and the mounting levers attach tightly to a flat top design Picatinny rail. This enables the scope to be sighted in while on the rifle, taken off of the rifle, and remounted back on the rifle while preserving precision. These types of mounts are useful and beneficial for shooting platforms which are moved around a lot, to take off the glass from the rifle for protection, or for scopes which are utilized in between several rifles. An example of this mount type is the 30mm mount from the Vortex Optics brand. It normally costs around $250 USD
Sealing and Gas Purging for Rifle Glass Tubes
Wetness inside your rifle optic can spoil a day of shooting and your costly optic by inducing fogging and generating residue within the scope’s tube. Many optics prevent humidity from going into the optical tube with a series of sealing O-rings which are water resistant. Normally, these water-resistant optics can be submerged beneath 20 or 30 feet of water before the water pressure can force moisture past the O-rings. This should be sufficient wetness avoidance for basic use rifles, unless you plan on taking your rifle aboard a watercraft and are concerned about the optic still performing if it goes over the side and you can still salvage the rifle.
Gas Purged Rifle Optic Tubes
Another component of preventing the accumulation of moisture within the rifle scope tube is filling the tube with a gas like nitrogen. Considering that this space is already taken up by the gas, the glass is less affected by temperature level changes and pressure differences from the outside environment which could possibly enable water vapor to permeate in around the seals to fill the vacuum which would otherwise exist. These are good qualities of a good rifle scope to seek out.
