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LM rail Mounts

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Spare Parts for Suhl Mounts

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The LM rails were a popular mounting solution in the previous decades in Europe. It has since then been almost entirely replaced by other, more modern mounting types. This rail is prismatic in its cross shape, with the angles of the rail placed at a 70° angle – therefore it was also known as the 70° prism rail. At the base it was 15 mm wide. The old rifle scopes had the LM rail attached to them at two points. The first point of securing the scope was on its objective. It was done quite similar to that of the Suhl or German Claw mount. The other point of contact was situated on the rifle scopes main tube, about the same place as it is done today. For this reason the LM rail was thin at one end and thick at the other. There was also a difference of height of both rails and in most cases, custom mounting solutions had to be made to compensate for this difference.

In the past there weren't so many standards. That is why almost every single LM rail was individualy fitted and custom finished to join the rifle scope with its firearm. The results were higher costs and non-interchangeable parts. In order for the rail to stay in its place and not to compromise the shooting accuracy, it was fixed to the rifle with a hole bored through the rail and the rifle, which was later fastened with a screw. It acted as a recoil stop as well. In today's world, there are almost no producers of scopes with LM rail on the market.

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Suhl Claw mounts were the most common form of detachable/repeatable mounts on European rifles before the modern pivot mounts emerged on the market. This type of mounts were mainly used in central Europe and especially dominated in Germany and Austria. Hence, for this reason such mounts are called German Claw mounts in the English speaking lands, whereas in central Europe the same mounts are usually just referred to as Suhl mounts. Suhl mounts are compromised from the front ring which embraces the objective bell and the rear ring that is located on the central tube of the scope. The prime reason for such popularity was the extraordinary repeatability and reliability, which is still remarkable by today’s standards. There are however some drawbacks with this type of mounting solution and due to this reasons their popularity rapidly declined in the last 2 decades. These are:

  • High price (Suhl Claw mount is the most expensive mount among all and a price of 1000 EUR or more for a single mount is quite ordinary. All such mounts are custom made by gunsmiths and their installation involves by far the most work input among all mounts.),
  • Front mounting base often has to be installed on the barrel (Almost all modern rifle scopes with 50 or 56mm objective lens and eye-relief of 80mm or more need the front ring around the objective bell, which means that the front base of the mount is placed on the barrel. This interferes with the free floating barrels and reduces accuracy.),
  • Sample to sample variation (The quality of the German Claw mount depends on the skill and knowledge of the gunsmith that installed it or even made it from scratch. That means that there are very big differences in quality from mount to mount.).