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S&B Convex rail Mounts

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One Piece Pivot Mounts
Spare Parts for Pivot Mounts

The rail in its cross-section is curved, hence the name S&B Convex rail. Schmidt and Bender have their very own solution when it comes to mounting a rifle scope to a firearm without the use of purpose made rings.

To mount the scope to the firearm first you have to properly insert the small convex metal adapters into the prepared slot at the bottom of the rifle scope. The next step is to attach this setting to a concave base and securely tightened. The two pieces will align to one and another due to their overlapping shape (convex – concave) and because of the grooves and perpendicular crests which at the end form the very impressive recoil stop. The recoil stop is as if it is made out of an array of tiny teeth that grab into themselves when they are subjected to the shooting forces. This kind of recoil is a result of friction caused by the grinding of the teeth. The only mounting solution that does not transmit the recoil by positive engagement is the Swarovski SR rail.

Mounting with a scope rail solutions is always the preferred way over the mounting with rings and in the future most of the European premium rifle scopes producers will exclusively use this approach. We are waiting on the first scope that will be produced with mounting rail only (apart from Zeiss Diarange which contains laser and cannot be mounted with rings at all).

When mounting with a rail you always get a perfect horizontal level as the reticle is aligned with the rail. Rings can leave marks on the main tube, but not only superficial marks, the structural integrity of the rifle scope can be compromised thus leaving the user with a corrupted image and tracking problems.The scopes that are mounted with the use of rail are lees subjected to recoil shocks and can withstand endless shots of almost any caliber Torque values for tightening the mounting elements in the scope rail should be between 4-5Nm.

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VIDEO

Pivot mounts are a special kind of repeatable mounts that are especially popular in Europe and mainly produced by European manufacturers. Most notable among them are German Companies like EAW (Ernst Apel Wurzburg), Recknagel, Henneberger and MAK. These Companies were also among the first to produce mounts of this type. Non German companies like Rusan are also following this trend.

Main benefits of pivot mounts, or swing mounts as they are sometimes called are:

  • 100% repeatability,
  • very quick and easy detaching and reattaching,
  • extremely durable; most mounts of this kind are tested on 10000 or more reattachments,
  • size and weight; light and small, elegant.

There are also some minor weaknesses that such mounts posses and they are: they are usually more expensive than other types of mounts, the installation on the rifle should be done by a skilled gunsmith and most of these mounts are higher than 14 mm.

A distinct feature of pivot/swing mounts is the way the scope attaches to the rifle. The front foot of the mount on the scope is inserted in the front base under a 90 degrees angle to the barrel. Then the entire scope is pivoted around the front base until it is locked into position by the rear base.

Pivot mounts of all types enable windage correction on the rear base at the time of the mounts installation. There are three main types of pivot mounts which are distinguished by the type of the rear base:

  • EAW style rear base: produced by EAW and Rusan,
  • Dovetail rail base: produced by Recknagel, Henneberger, MAK and others.
  • Leupold type rear base