Description
Rifle Scope Product Details
Sightmark Triple Duty 6-25×56 35mm DX Riflescope
The Sightmark 6-25×56 Triple Duty riflescope uses cutting edge glass and lens coatings to ensure that it is the most accurate tactical instrument on the market. Precision multicoated optics are the distinguishing feature of the Sightmark Triple Duty riflescope line; multicoated lenses offer the clearest view for easy target acquisition in both bright and low light situations. Both waterproof and fog proof, the nitrogen filled Sightmark Triple Duty line features oversized windage, elevation and focusing adjustment knobs for easy adjustment in the field. Locking mechanisms on the windage and elevation adjustments provide an additional level of accuracy and ensure that the scope stays zeroed. The 6-25×56’s internal lit duplex reticle helps shooters to successfully make highly accurate shots over a wide range of distances.
Rifle Scope Product Features
Precision accuracy
Adjustment lock
Duplex Reticle
Wide field of view
1/8-Inch locking MOA
Developing Products That Work As Hard As You Do
Long hours, harsh weather, dangerous pursuits: it’s all in a day’s work. You’re devoted to protecting others so your equipment needs to work as hard as you do. Whether you’re in the line of duty, defending your home or serving as a protector of peace- you can rest assured that accuracy and quality come standard in every Sightmark product.
Our goal is to provide state-of-the-art optics and accessories to make the modern shotgun, rifle & pistol as accurate as possible. In addition, each product is designed for the core market, enabling shooters to purchase more high quality items to accessorize their firearm for various needs.
Sightmark has earned several patents and awards from industry associations and publications including Field & Stream, Optics Planet, Outdoor Life and Predator Xtreme. Numerous optics and accessories have been field tested and approved by prominent outdoor organizations such as the North American Hunting Club and the National Tactical Officers Association.
Best Sellers
Riflescopes: When you pick up a Sightmark Riflescope, what you will find is a product that has been crafted to match your pursuit. From tactical setups to a hunting scope fitted on your favorite rifle, each optic is designed for a range and reticle style to best match the conditions you’ll find in the field. Embracing this concept, Sightmark is able to provide a riflescope for every shooter.
Riflescopes
Red Dot Sights/Reflex Sights
Boresights
Digital Night Vision Riflescopes
Tactical
Mil-Spec Driven
Hunting
Field Qualified
Competition
Range Tested
Whether you’re a 3-gun competition shooter, or a dedicated hunter, laying a foundation at the shooting bench is essential, no matter the pursuit. Devoting serious time at the range provides the repetition needed to build confidence in your abilities as a marksman.
At Sightmark, our goal is to deliver confidence by creating optics and accessories that every shooter can rely on. We understand what it takes to prepare and we know that the hours spent hunched over a shooting bench at the range are meaningless unless your products do their job. From riflescopes and binoculars to night vision technology and red dots, Sightmark is committed in our pursuit of building durable, accurate optics you can trust.
About the Sightmark Brand
Sightmark is a premium manufacturer for weapon scopes, optics, mounts, and other components used for firearms like rifles and long guns. They design and build their scopes, mounts, and related products by using elements which are long lasting and resilient. This includes the Sightmark Triple Duty 6-25×56 35mm DX Riflescope by Sightmark. For additional shooting items, visit their website.
Info About Glass
Rifle scopes permit you to precisely align a rifle at different targets by aligning your eye with the target over a range. They accomplish this through magnification by using a series of lenses inside the scope. The scope’s positioning can be adjusted for consideration of varied natural things like wind speed and elevation increases or decreases to account for bullet drop.
The scope’s function is to help shooters understand exactly where the bullet will land based upon the sight picture you are seeing through the optic as you line up the scope’s crosshair or reticle with the target. The majority of contemporary rifle scopes and optics have about eleven parts which are arranged inside and outside of the scope. These scope parts consist of the rifle scope’s body, lenses, elevation dials or turrets, focus rings, and other elements. See all eleven parts of a rifle scope.
About Rifle Optic Varieties
Rifle scopes can be either “first focal plane” or “second focal plane” type of scopes. The style of focal plane an optic has determines where the reticle or crosshair lies relative to the scopes magnification. It literally means the reticle is behind or in front of the magnifying lens of the optic. Deciding upon the most beneficial style of rifle glass is dependent on what sort of shooting or hunting you anticipate doing.
First Focal Plane Scope Facts
Focal plane scopes (FFP) include the reticle in front of the zoom lens. These kinds of scopes are beneficial for:
- Quick acquisition, far away types of shooting
- Shooting scenarios where calculations are low
- Experienced shooters who recognize their aim point “hold over” and “lead” ratios for their long gun
- Shooters who do not mind the reticle is enlarged and takes up more visual eyesight space than a SFP reticle
Second Focal Plane Glass Info
Second focal plane scopes (SFP) feature the reticle to the rear of the magnifying lens. This causes the reticle to stay at the exact same size relative to the quantity of zoom being used. The result is that the reticle measurements shift based upon the zoom used to shoot over greater ranges given that the reticle markings represent distinct increments which differ with the zoom level. In the FFP illustration with the SFP optic, the 5x “zoom” 100 yard tick reticle measurement would be 1/5th of the non “zoom” tick measurement. These particular types of optics work for:
- Long distance styles of shooting where shooters have increased time to make ballistic calculations
- Shooting where most shots occur within much shorter ranges and spaces
- Shooters who like a clearer optic picture with less area taken up by the larger size FFP reticle
Ins and Outs of Optic Zoom
The quantity of magnification a scope offers is identified by the size, density, and curvatures of the lenses inside of the rifle scope. The magnification of the scope is the “power” of the scope.
About Fixed Power Lens Rifle Glass
A single power rifle optic will have a magnification number designator like 4×32. This indicates the zoom power of the scope is 4x power and the objective lens is 32mm. The magnification of this type of scope can not change since it is a fixed power optic.
Info About Variable Power Lens Glass
Variable power rifle scopes use variable power levels. The power change is achieved by using the power ring part of the scope near the back of the scope by the eye bell.
Power and Range
Here are some advised scope power settings and the distances where they could be effectively used. Highly magnified glass will not be as efficient as lower magnification level optics considering that too much zoom can be a negative aspect depending on your shooting distance. The exact same idea goes for longer distances where the shooter needs to have enough power to see precisely where to properly aim the rifle.
Info on Lens Finish
All top of the line rifle scope lenses are coated. Lens finishing is a vital aspect of a rifle system when looking into high end rifle optics and scope systems.
HD Versus ED Lens Coatings
Some scope manufacturers likewise use “HD” or high-definition lens finishes which use different processes, polarizations, chemicals, and elements to draw out different colors and viewable quality through the lens. Some scope makers use “HD” to refer to “ED” meaning extra-low dispersion glass.
Single Finish Versus Multi-Coating
Different optic lenses can also have different coverings applied to them. All lenses generally have at least some type of treatment or coating applied to them prior to being used in a rifle scope or optic.
This lens treatment can protect the lens from scratches while lowering glare and other less beneficial 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 makers similarly make it a point to specify if their optic lenses are covered or “multi” covered. Being “much better” depends on the maker’s lens treatment innovation and the quality of products used in constructing the rifle scope.
Glass Lens Anti-water Covering
Water on a lens doesn’t help with preserving a clear sight picture through a scope at all. Lots of top of the line and high-end scope makers will coat their lenses with a hydrophobic or hydrophilic finishing.
Choices for Installing Rifle Glass on Firearms
Mounting options for scopes come in a couple of choices. There are the standard scope rings which are individually mounted to the scope and one-piece mounts which cradle the scope. These different types of mounts also normally come in quick release variations which use manual levers which enable rifle operators to rapidly mount and dismount the scope.
Rifle Scope Mounts with Hex Key Rings
Standard, clamp design mounting scope rings use hex head screws to mount to the flattop style Picatinny scope installation rails on rifles. These types of scope mounts use a couple of separate rings to support the optic, and are made from 7075 T6 billet aluminum which is designed for long distance accuracy shooting. This type of scope mount is perfect for rifles which need a long lasting, rock solid mounting solution which will not move no matter how much the scope is moved or abuse the rifle takes.
Quick-Release Cantilever Rifle Scope 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. Several scopes can even be swapped out if they all use a compatible style mount. These types of mounts come in handy for rifles which are carried a lot, to swap out the optic from the rifle for protection, or for optics which are used in between several rifles.
What to Know About Rifle Glass Tube Sealing and Gas Purging
Moisture inside your rifle optic can ruin a day on the range and your expensive optic by causing fogging and creating residue within the scope tube. A lot of scopes protect against humidity from entering the scope tube with a system of sealing O-rings which are waterproof. Usually, these water resistant optics can be immersed within 20 or 30 feet of water before the water pressure can push moisture past the O-rings. This should be sufficient wetness prevention for common use rifles, unless you plan on taking your rifle on your motorboat and are concerned about the scope still functioning if it falls overboard and you can still rescue the rifle.
Optic Gas Purging
Another part of preventing the buildup of moisture within the rifle optic’s tube is filling the tube with a gas like nitrogen. Since this area is already occupied by the gas, the scope is less influenced by condition alterations and pressure differences from the external environment which may potentially permit water vapor to leak in around the seals to fill the void which would otherwise exist. These are good qualities of a good rifle scope to look for.
