Abstract: A breech for noise reduction in a recoil-less weapon is described. The breech is adapted to be arranged in fluid communication with a launcher of the weapon to release exhaust gas. The breech comprises a venturi tube. The venturi tube has an inlet at a first end adapted to be connected to the launcher, and an outlet for releasing the exhaust gas at a second end, wherein the area of the outlet is larger than the area of the inlet. The venturi tube further comprises an exhaust gas controlling element formed at the venturi tube structure. The exhaust gas controlling element is arranged to control the release of exhaust gas so as to decrease a sound pressure peak at the weapon. The inner envelope surface of the venturi tube is configured, such that the inner envelope surface does not alter or at least has a very small influence on recoil characteristics of the weapon.

Abstract: A breech for noise reduction in a recoil-less weapon is described. The breech is adapted to be arranged in fluid communication with a launcher of the weapon to release exhaust gas. The breech comprises a venturi tube. The venturi tube has an inlet at a first end adapted to be connected to the launcher, and an outlet for releasing the exhaust gas at a second end, wherein the area of the outlet is larger than the area of the inlet. The venturi tube further comprises an exhaust gas controlling element formed at the venturi tube structure. The exhaust gas controlling element is arranged to control the release of exhaust gas so as to decrease a sound pressure peak at the weapon. The inner envelope surface of the venturi tube is configured, such that the inner envelope surface does not alter or at least has a very small influence on recoil characteristics of the weapon.

Abstract: An arrangement and methods for firing a fire arm. The fire arm includes a determining unit configured to determine a movement of an aim point for the fire arm relative to a target. A processing unit is configured to determine a target point for the aim point based on the movement of the aim point relative to the target and to predict the future movement of the aim point. A firing unit is configured to fire the fire arm when the aim point is predicted to be within a tolerance of the target point.

Abstract: An object identification and a tracking system and a method in an object identification and a tracking system for associating an object identity with a position for an object in a warehouse.

Abstract: An arrangement and methods for firing a fire arm. The fire arm includes a determining unit configured to determine a movement of an aim point for the fire arm relative to a target. A processing unit is configured to determine a target point for the aim point based on the movement of the aim point relative to the target and to predict the future movement of the aim point. A firing unit is configured to fire the fire arm when the aim point is predicted to be within a tolerance of the target point.