One of the oldest joining systems in history, dovetail joints are common in woodworking, often used to join corners in cabinetry and furniture. This same stable and secure joinery is employed in the dovetail rail system. Commonly used on rimfire rifles and air guns, the dovetail mounting system features two grooves that run parallel to the bore. Developed by William Ralph Weaver, the Weaver rail was created in an attempt to standardize scope mounts.
Before the development of the standard weaver rail, rifles were often drilled and tapped for small screws to secure a mounted scope. However, this mounting method often failed under rifle recoil.
The Weaver rail design features a pair of parallel rails with several perpendicular slots. Initially, Weaver rails were made in two separate pieces. This two-piece design made mounting optics time-consuming and proper alignment complicated. When the Weaver rail was first introduced, this two-piece design was essential for cartridge insertion, especially for rifles with internal magazines that could be fed with striper clips. Once rifles with detachable magazines became more common, one-piece Weaver systems began to replace the original two-piece design.
Weaver rails have a. However, because there is no standard requirement for spacing, there is incredible variety among Weaver rails. Because of their versatility, Picatinny rails have replaced fixed iron sights on many long gun models. Picatinny rails are also prominently used to mount a variety of accessories including flashlights, red dot sights, bipods, and fore grips.
They commonly appear on rifles, shotguns, and modern handguns. The Picatinny design consists of a strip undercut to form a hexagonal cross-section with crosswise slots placed at consistent intervals. This concept allows the shooter to slide accessories into place from the end of the rail and then securely lock them into place. Picatinny rails were developed after the Weaver design, and the profile of the two systems are virtually identical.
The key difference is the placement and width of the slots. Slots on a Picatinny rail are. On the Weaver, these slots measure. Another notable difference in the two systems is the bottom of the recoil slot, which is square on a Picatinny rail and rounded on a Weaver. The Picatinny rail has replaced the Weaver rail in almost every corner of the modern shooting industry. Military use and the consistent design of the Picatinny rail system have played major roles in the fall of the once popular Weaver system.
Anshutz-compatible mounts made for a rounded top will fit receivers of rifles with a flat top ; however, mounts made for rifles with a flat receiver will not fit Anshutz's round receiver. Fixed two-piece ring mounts cannot be detached from a rifle without the use of tools. They come at an affordable price and offer high reliability. Generally, they are not difficult to install on a rifle.
Fixed means that the user cannot quickly detach and therefore switch scopes, which limits the usability of the rifle. Fixed ring mounts for 11 mm Dovetail are mostly produced in two fashions. A direct rings with 11 mm clamps and B advanced two part rings with separated base part, which clamps 11 mm Dovetail and ring which is attached to the base part.
Simple rings are cheaper and easier to manufacture, while more advanced rings with separated ring and base part are more expensive, but usually offer a possibility to adjust scope's windage on the mount itself.
Some manufacturers also produce one-piece Monoblock mounts for 11 mm Dovetails. We can group fixed ring mounts for 11 mm Dovetail in the following groups:. This is a more expensive option than buying fixed ring mounts however, it's still fairly cheap in comparison to other mounting solutio ns. Fixed rail mounts are reliable and lightweight, but user is unable to qu ickly switch between scopes on the rifle.
Not many manufacturers make these, so there are fewer possibilities than amongst fix ed ring mounts. Majority of mounts in this category is of two-part fashion. That means, that the mounts are composed of lower part base part that is mounted directly on the 11 mm Dovetail on the receiver, and upper part which holds the scope rail. Fixed one-piece ring mounts are divided into two separate groups.
They are very good at providing concentricness between both rings which results in no tension on the scope. These mounts provide great robustness and stability. When talking about Detachable Mounting options, this means these mounts are removable without tools or other instruments, additionally you can remove them simply with the use of bare hands.
Usually, these mounts don't offer full repeatability. These mounting options offer great advantage in terms of transport. Riflescope and rifle can be transported individually. When reattaching the scope on the rifle, point of impact shifts up to 10 cm on m. Detachable Rings mounts are designed with simple metal levers, which are used for quick remove from the rifle. These mounts straightforwardly clamp on the 11 mm Dovetail.
Final position of the levers can usually be switched without the change of the clamping force on the Dovetail. This offers a posibillity to adjust the position of the levers for a better visual appeal both levers pointing in the same direction , once the mount is positioned and fixed on the 11 mm Dovetail.
A special kind of repeatable mounts are pivot mounts, also known as swing mounts. Pivot mounts are extremely durable, lightweight, compact and elegant. Their drawback is perhaps their price, which is considerably higher than the price of fixed mounts with rings and other mounting options.
The installation on the rifle should be done by a skilled gunsmith. Most of the times, pivot mounts are higher than 14 mm. They allow simple installation of multiple riflescopes or red dot sights on a single rifle with great amount of interchangeability. Pivot rail mounts are available in either one-piece or two-piece versions. Such setup tends to be a bit higher than with ring mounting, but this is usually not a problem for scopes with 50 or 56 mm objective lens. One-Piece Pivot mounts for rails clamp on the rail of the scope on almost it's entire length and provide very reliable mounting solution.
The Picatinny rail is on a good way of becoming a global standard for mounting since it was invented in Developed on the Weaver template, the biggest advantage of the Picatinny rail is the usage across its entire length, unlike Weaver which has predesignated slots for mounting, limiting its usability and versatility. Ease of use and interchangeability are also its assets. Picatinny has slots evenly placed, namely exactly 5.
Because of this, the mounting is identical on all firearms using the Picatinny standard. Although, the most common are 0 and 20 MOA versions. Picatinny rail can accommodate all types of mounts, also those designed for Weaver standard. Adapters offer difference of height and mounting solutions. For example, upper side of the adapter has a Picatinny rail installed, while bottom side attaches to Dovetail additionally, it also raises mounting surface.
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