A weapon sight can be mounted on a weapon. For improved mounting and easier assembly the insert has an outer surface which is spherical at least in sections and is supported at the inner surface of the housing by way of at least two bearing points of matching contour, wherein a spring element is associated with at least one bearing point. Thus, change in the magnetization direction of the free magnetic layer before and after a sensing current is applied in the magnetic detecting element can be suppressed. The heatable supporting material has a high heating capacity and is suited for producing pressure-sensitive tapes for adhering heatable mirrors. A flexible cable housing slidably retains the cable and defines a path length between the drive mechanism and the locking pawl. A card of deep-drawable material is placed between the upper and lower die and an elastic body is placed between the card and the lower die or between the card and the upper die.