Description
Rifle Scope Product Details
Kalinka Optics POSP 4×24, 400m Rangefinder, AK with Sunshade
POSP 4×24 Rifle Scope w/ 400 Meter Rangefinder, AK Version. The military reticles have an extremely effective and useful height-based rangefinder for dual use, with graduated scales for both standing and prone figure estimation. The 400 meter Simonov height based gradient (choke style) rangefinder has holdover aiming marks for quick reaction shooting at 100 and 200 meters.Once the primary inverted chevron aiming mark is adjusted for zero at 100 meters, the lower chevron is bullet drop compensated for shots at 200 meters automatically. Since the range calibrations for both the AK and SVD versions on both the 1000 meter Dragunov and 400 meter Simonov models are measured in equal amounts of MOA, all versions of the POSP can be used effectively with any caliber of weapon. The POSP features a red illuminated reticle which allows you to make perfect kill shots in dusk conditions. Illumination is provided by a simple diode.POSP’s feature professionally ground, crystal clear optics, nitrogen filling to prevent lens fogging, and larger diameter tubes for improved light gathering under the most severe conditions.it is waterproof and can be used in any climate condition. It comes with a high quality mil-spec finish, and rubber lens cap, eye piece, and nylon carrying case.The AK V clamp can easily be mounted to any of these rifles with the standard side rail: AK, AKM, Vepr, Saiga, K-var, KBI, Hesse, Century and Arsenal USA copies, Romak1/2, SLR-93, SLR-95, SLR-101, MK-11, SAR, WUM, SA85M, WASR (check for installed rail), Maddi, Norinco and Poly-Tech copies and many more models.
Rifle Scope Product Features
Red illuminated reticle which allows you to make perfect kill shots in dusk conditions
Professionally ground, crystal clear optics, nitrogen filling to prevent lens fogging, and larger diameter tubes for improved light gathering under the most severe conditions.
Waterproof and can be used in any climate condition
High quality mil-spec finish,rubber lens cap, eye piece, and nylon carrying case
The 400 meter Simonov height based gradient (choke style) rangefinder has holdover aiming marks for quick reaction shooting
About the Kalinka Optics Scope Maker
Kalinka Optics is a premium maker for firearm scopes, optics, mounts, and other add-ons used for firearms like rifles and long guns. They style and make their mounts and related products choosing building materials which are durable and long lasting. This includes the Kalinka Optics POSP 4×24, 400m Rangefinder, AK with Sunshade by Kalinka Optics. For more shooting items, visit their website.
Optic Facts
Rifle scopes allow you to precisely aim a rifle at various targets by lining up your eye with the target over a distance. They accomplish this through magnification by using a set of lenses within the scope. The scope’s positioning can be dialed in for consideration of different environmental elements like wind speed and elevation decreases to account for bullet drop.
The scope’s function is to help the shooter understand precisely where the bullet will hit based on the sight picture you are viewing with the scope as you align the scope’s crosshair or reticle with the intended point of impact. Many modern rifle optics have about eleven parts which are found inside and on the exterior of the scope body. These scope parts consist of the rifle scope’s body, lenses, adjustment turrets or dials, focus rings, and other components. See all eleven parts of a scope.
Rifle Scope Types
Rifle scopes can be either “first focal plane” or “second focal plane” type of scopes. The sort of focal plane an optic has establishes where the reticle or crosshair is located relative to the scopes magnifying adjustments. It actually suggests the reticle is situated behind or ahead of the magnifying lens of the optic. Deciding on the very best form of rifle optic is dependent on what variety of shooting or hunting you anticipate undertaking.
First Focal Plane Glass
Focal plane scopes (FFP) include the reticle in front of the zoom lens. These kinds of scopes are helpful for:
- Quick acquisition, far away kinds of shooting
- Shooting scenarios where computations are small
- Experienced shooters who understand their aim point “hold over” and also “lead” relationships for their weapon
- Shooters who don’t mind the reticle is bigger and uses up more visual sight space than a SFP reticle
About Second Focal Plane Scopes
Second focal plane scopes (SFP) include the reticle behind the zoom lens. In the FFP example with the SFP scope, the 5x “zoom” 100 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 computations
- Shooting where most shots take place within much shorter ranges and spaces
- Shooters who choose a clearer optic sight picture with less area used up by the larger size FFP reticle
Magnification for Rifle Scopes
The level of scope magnification you need on your glass depends upon the type of shooting you plan to do. Pretty much every type of rifle optic supplies some amount of zoom. The level of magnification a scope delivers is identified by the dimension, thickness, and curves of the lenses inside of the rifle scope. The magnifying level of the optic is the “power” of the scope. This suggests what the shooter is checking out through the scope is magnified times the power element of what can generally be seen by human eyes.
Fixed Power Lens Optic Facts
A single power rifle optic will have a magnification number designator like 4×32. This suggests the zoom power of the scope is 4x power and the objective lens is 32mm. The magnification of this type of optic can not change since it is fixed.
About Variable Power Lens Rifle Glass
Variable power rifle scopes can be changed between magnification increments. It will list the zoom amount in a configuration such as 2-10×32. These numbers suggest the magnification of the scope can be adjusted in between 2x and 10x power. This also utilizes the powers in-between 2 and 10. The power adaptation is accomplished by employing the power ring component of the scope near the rear of the scope by the eye bell.
Power and Range
Here are some recommended scope power settings and the ranges where they can be effectively used. High power optics will not be as efficient as lower magnification level optics since too much magnification can be a bad thing. The very same idea goes for extended ranges where the shooter needs increased power to see precisely where to properly aim the rifle.
Info on Lens Covering
All modern-day rifle optic and scope lenses are coated. There are different types and qualities of coverings. Lens finishing can be an essential aspect of a rifle when thinking of high-end rifle optics and scope systems. The lenses are one of the most key components of the glass since they are what your eye sees through while sighting a rifle in on the point of impact. The coating on the lenses safeguards the lens exterior and assists with anti glare from refracted light and color profiles.
HD Versus ED Lenses
Some rifle scope companies additionally use “HD” or high-def lens finishes that employ different procedures, chemicals, polarizations, and elements to extract various color ranges and viewable target definition through the lens. This HD covering is commonly used with increased density lens glass which decreases light’s chance to refract through the lens glass. Some scope brands use “HD” to refer to “ED” signifying extra-low dispersion glass. ED handles how certain colors are presented on the chromatic spectrum and the chromatic difference or aberration which is also called color distortion or fringing. Chromatic aberration can be noticeable over items with well defined shapes as light hits the item from certain angles.
Single Scope Lens Finish Versus Multi-Coating
Various optic lenses can likewise have different coverings applied to them. All lenses generally have at least some type of treatment or finishing applied to them prior to being used in a rifle scope or optic.
Single covered lenses have a treatment applied to them which is generally a protective and boosting multi-purpose treatment. This lens treatment can protect 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 producer and the amount you spent for it. Both the make and cost are signs of the lens quality.
Some scope producers similarly 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 building the rifle scope.
Rifle Optic Lens Anti-water Coating
Water on an optical lens does not help with retaining a clear sight picture through a scope in any way. Many top of the line or high-end scope producers will coat their lenses with a hydrophobic or hydrophilic covering. The Steiner Optics Nano-Protection is a fine example of this sort of treatment. It treats the exterior surfaces of the Steiner glass lens so the water particles can not bind to it or create surface tension. The result is that the water beads sheet off of the scope to preserve a clear, water free sight picture.
Rifle Glass Mounting Alternatives
Mounting solutions for scopes come in a few choices. There are the basic scope rings which are separately installed to the scope and one-piece scope mounts which cradle the scope. These different kinds of mounts also usually come in quick release variations which use toss levers which permit rifle shooters to rapidly install and remove the scope.
Glass Mounts with Hex Key Rings
Basic, clamp-on type mounting optic rings use hex head screws to install to the flattop style Picatinny scope mounting rails on the tops of rifles. These kinds of scope mounts use two individual rings to support the optic, and are normally constructed from 7075 T6 billet aluminum or similar materials which are created for far away precision shooting. This kind of scope mount is very good for rifle systems which need a long lasting, hard use mount which will not change no matter just how much the scope is moved or abuse the rifle takes. These are the type of mounts you should have for a faithful optics system on a long distance hunting or tournament rifle that will hardly ever need to be changed or adjusted. Blue 242 Loctite threadlocker can also be used on the mount’s screws to stop the hex screw threads from wiggling out after they are installed firmly in place. An example of these rings are the 30mm style from the Vortex Optics company. The set normally costs around $200 USD
Quick-Release Cantilever Rifle Optic Rings
These kinds of quick-release rifle scope mounts can be used to quickly attach and take off a scope from a rifle. A wide range of scopes can also be switched out if they all use a similar style mount. The quick detach mount style is CNC machined from anodized 6061 T6 aluminum and the mounting levers attach tightly to a flat top style Picatinny rail. This allows the scope to be sighted in while on the rifle, taken off of the rifle, and remounted while preserving precision. These kinds of mounts come in practical for rifles which are transferred between vehicles a lot, to take off the optic from the rifle for protection, or for optics which are employed between multiple rifles. An example of this mount type is the 30mm mount from the Vortex Optics brand. It typically costs around $250 USD
What to Know About Glass Tube Sealing and Gas Purging
Wetness inside your rifle scope can ruin a day of shooting and your pricey optic by bringing about fogging and producing residue inside of the scope tube. A lot of scopes prevent wetness from getting in the scope tube with a system of sealing O-rings which are water resistant.
Gas Purged Rifle Scope Tubes
Another part of avoiding the buildup of wetness within the rifle optic tube is filling the tube with a gas like nitrogen. Considering that this space is already occupied by the gas, the glass is less altered by temperature changes and pressure differences from the outdoor environment which might possibly allow water vapor to leak in around the seals to fill the vacuum which would otherwise exist. These are good qualities of a decent rifle scope to look for.
