Description
Rifle Scope Product Details
Twod 3-9x40mm Rifle Scope w/BDC Illuminated Reticle Rifle Scope
Rifle Scope Product Features
About this item
The fully multicoated objective lens is shock, water, and fogproof from a dry nitrogen filled tube.Hard Anodized Finish-Highly durable low-glare matte finish helps camouflage the shooter’s position.Aircraft-Grade Aluminum. Constructed from a solid block of aircraft-grade aluminum for strength and rigidity.
Tall Exposed Tactical Turrets. The Diamondback Tactical scopes feature tactical windage and elevation turrets with Zero Reset making adjustments back to zero easy and quick.25mm tube diameter provides maximized internal adjustment and strength.
Precision-Glide Erector System. Uses premium components in the zoom lens mechanism to ensure smooth magnification changes under the harshest conditions.Precision-force Spring System. Uses premium components in the erector-spring system to ensure maximum repeatability and ease of adjustment.Nitrogen gas purging prevents internal fogging over a wide range of temperatures.
The power magnification range is perfect for the sport, with the lower end providing the minimal magnification needed for close range shots and the higher end being optimal for longer range distances.
The eyepiece is fast-focus, which is great for moments requiring quick reaction time. There are windage and elevation adjustment turrets, which have a 1/4 inch click value. This scope comes with a limited lifetime warranty, as well as a flip-open lens cover, which is just a nice little additional feature.
Twod Rifle Scope
The Twod 3-9×40 scope is a step up from an average or basic rifle scope, and the brand ensures a clear sight and fast focusing while hunting. If you have moderate hunting needs, both newcomers and professionals should feel comfortable purchasing this great piece of gear made by the well trusted brand Twod.
3-9x40mm Rifle Scope
The Twod 3 9×40 scope is the best choice for just about any hunter.
14″-25″@100yards, 2-3″ Eye relief , Fast-focus eyepiece the rangefinder reticle is good for hunting/shooting at varying ranges.
Magnification: 3-9x
Tube diameter: 1″ (25.4mm)
Adjustment Click Value: 1/4 MOA
Lens Coating: Fully multicoated
Objective Diameter: 1.57″ (40mm)
Reticle: Rangefinder Reticle
Product Highlights
Fully Multicoated Optical System
Multiple layers of anti-reflective compounds on every glass surface provide bright, vivid pictures and optimum light transmission from dawn to dusk.
Rangefinder Reticle
The Range Finder Reticle is designed specifically to enhance a shooter’s long range accuracy and ranging capabilities under a variety of field conditions.
Precise E/W Adjustment
Windage & Elevation click value: 1/4 MOA 1/4″ @ 100 yards, Tool-free click instruction adjustment.
About the TW TWOD Company
TW TWOD is a premium company for firearm scopes, optics, mounts, and other components used for firearms like rifles and long guns. They design and manufacture their mounts and related products using materials which are long lasting and resilient. This includes the Twod 3-9x40mm Rifle Scope w/BDC Illuminated Reticle Rifle Scope by TW TWOD. For more shooting goods, visit their website.
Optic Info
Rifle scopes allow you to precisely aim a rifle at different targets by lining up your eye with the target at range. They do this through magnifying the target by making use of a series of lenses within the scope. The scope’s alignment can be adapted to account for many ecological factors like wind and elevation increases or decreases to make up for bullet drop.
The scope’s purpose is to help the shooter understand exactly where the bullet will land based on the sight picture you are viewing using the optic as you align the scope’s crosshair or reticle with the intended point of impact. A lot of contemporary rifle optics have around eleven parts which are found within and externally on the optic. These scope parts include the rifle scope’s body, lenses, windage and elevation dials, objective focus rings, and other components. Learn about the eleven parts of rifle optics.
Rifle Optic Types
Rifle scopes can be either “first focal plane” or “second focal plane” type of scopes. Choosing the perfect type of rifle optic is based around what type of shooting you plan to do.
First Focal Plane Scope Info
First focal plane glass (FFP) feature the reticle before the magnifying lens. This triggers the reticle to increase in size based on the extent of zoom being used. The benefit is that the reticle measurements are the same at the magnified range as they are at the non magnified range. One tick on a mil-dot reticle at 100 yards with no “zoom” is still the same tick at 100 yards by using 5x “zoom”. These kinds of scopes work for:
- Quick acquisition, long distance kinds of shooting
- Shooting situations where computations are small
- Experienced shooters who know their target “hold over” and also “lead” ratios for their long guns
- Shooters who don’t mind the reticle is bigger and takes up more visual eyesight space than a SFP reticle
Info on Second Focal Plane Glass
Second focal plane optics (SFP) feature the reticle to the rear of the zoom lens. In the FFP example with the SFP scope, the 5x “zoom” one hundred yard tick reticle measurement would be 1/5th of the non “zoom” tick measurement.
- Long distance kinds of shooting where shooters have extra time to make ballistic estimations
- Shooting where most of the shots occur within shorter ranges and proximities
- Shooters who prefer a clearer optic sight picture with less area taken up by the larger sized FFP reticle
Ins and Outs of Rifle Optic Zoom
The amount of magnification a scope provides is identified by the diameter, density, and curvatures of the lenses inside of the rifle scope. The zoom of the scope is the “power” of the scope.
Fixed Power Lens Rifle Optic Facts
A single power rifle optic will have 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 kind of optic can not fluctuate because it is fixed.
About Adjustable Power Lens Scopes
Variable power rifle scopes can be changed between magnification increments. These types of scopes will note the zoom degree in a configuration such as 2-10×32. These numbers imply the magnification of the scope can be set between 2x and 10x power. This also incorporates the powers in-between 2 and 10. The power modification is accomplished utilizing the power ring part of the scope near the back of the scope by the eye bell piece.
The Power and Range Correlation of Rifle Glass
Here are some advised scope power settings and the distances where they could be effectively used. Remember that high power scopes and optics will not be as effective as lower powered optics because increased magnification can be a negative thing in certain situations. The same relates to extended distances where the shooter needs sufficient power to see exactly where to properly aim the rifle at the target.
Lens Covering for Rifle Optics
All modern rifle optic lenses are layered. Lens finishing can be a crucial aspect of a rifle when considering high end rifle optics and scope equipment.
HD Versus ED Lens Coatings
Some scope producers likewise use “HD” or high-definition lens finishes which use different processes, polarizations, chemicals, and elements to draw out separate colors and viewable definition through the lens. Some scope makers use “HD” to refer to “ED” meaning extra-low dispersion glass.
Single Finishing Versus Multi-Coating
Different optic lenses can also have different coverings used to them. All lenses generally have at least some type of treatment or finish used to them prior to 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 covered lens depends on the scope manufacturer and how much you paid for it.
Some scope producers likewise make it a point to define if their optic lenses are coated or “multi” coated. This implies the lens has had multiple treatments applied to them. If a lens receives multiple treatments, it can prove that a maker is taking multiple actions to fight different natural elements like an anti-glare finishing, a scratch resistant anti-abrasion coating, followed by a hydrophilic coating. This additionally doesn’t necessarily indicate the multi-coated lens is much better than a single layered lens. Being “much better” depends on the manufacturer’s lens treatment solutions and the quality of products used in creating the rifle glass.
Hydrophobic Rifle Glass Lens Coating
Water on a lens does not help with keeping a clear sight picture through a scope at all. Numerous top of the line and high-end scope companies will coat their lenses with a hydrophilic or hydrophobic covering which is water repellent.
Glass Installation Choices
Mounting solutions for scopes are available in a couple of choices. There are the standard scope rings which are individually mounted to the optic and one-piece scope mounts which cradle the scope. These different types of mounts also typically are made in quick release versions which use manual levers which enable rifle operators to quickly mount and dismount the scopes.
Hex Key Optic Rings
Standard, clamp-on type mounting optic rings use hex head screws to install to the flattop style Picatinny scope mount rails on rifles. These types of scope mounts use a pair of detached rings to support the optic, and are normally made from 7075 T6 billet aluminum or similar materials which are designed for long distance accuracy shooting. This form of scope mount is effective for rifles which require a long lasting, hard use mount which will not shift no matter just how much the scope is moved about or abuse the rifle takes. These are the style of mounts you really want to have for a specialized scope setup on a long distance scouting or hard target interdiction rifle that will hardly ever need to be modified or adjusted. Blue 242 Loctite threadlocker can also be used on screws to prevent the hex screws from wiggling out after they are mounted firmly in place. An example of these rings are the 30mm type from the Vortex Optics company. The set normally costs around $200 USD
Quick-Release Cantilever Scope Rings
These types of quick-release rifle scope mounts can be used to rapidly remove a scope and connect it to a different rifle. Numerous scopes can also be swapped out if they all use a similar style mount. These types of mounts are handy for rifles which are transferred 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 Scope Tube Sealing and Gas Purging
Moisture inside your rifle optic can ruin a day of shooting and your pricey optic by inducing fogging and developing residue within the scope tube. Most scopes protect against moisture from going into the optical tube with a system of sealing O-rings which are waterproof. Usually, these scopes can be submerged beneath 20 or 30 feet of water before the water pressure can push moisture past the O-rings. This should be plenty of humidity prevention for standard use rifles, unless you anticipate taking your rifle on your motorboat and are worried about the scope still performing if it falls overboard and you can still salvage the gun.
Info Around Rifle Glass Tube Gas Purging
Another element of avoiding the buildup of wetness inside of the rifle optic’s tube is filling the tube with a gas like nitrogen. Because this space is already taken up by the gas, the scope is less influenced by temp alterations and pressure variations from the outside environment which could possibly allow water vapor to permeate in around the seals to fill the void which would otherwise be there. These are good qualities of a decent rifle scope to seek out.
