Mounts for optical sighting devices

An optical sight mount for securing an optical sighting device to a mounting interface aligned with a sighting axis of a firearm, the optical sight mount comprising:

• a base configured to releasably engage the mounting interface;
• and
• a sight support member slidably coupled to the based;
• wherein the sight support member is configured to linearly move an attached optical sighting device between two positions located over the mounting interface and on substantially the same vertical plane.

A pivot mount for securing an optical sighting device to a mounting interface aligned with a sighting axis of a firearm, the pivot mount comprising:

• a base configured to releasably engage the mounting interface;
• and
• a sight support member rotatably coupled to the base;
• wherein:
• the sight support member includes a pivot portion rotatably connected to the base;
• the pivot portion is configured to rotate about a horizontal axis that is parallel to the sighting axis of the firearm;
• the sight support member is configured to move an attached optical sighting device between two laterally offset positions located on one side of the horizontal axis about which the pivot portion rotates.

A pivot mount for securing an optical sighting device to a mounting interface aligned with a sighting axis of a firearm, the pivot mount comprising:

• a base configured to releasably engage the mounting interface;
• and
• an optical sighting device rotatably coupled to the base by at least one sight support member;
• wherein the at least one sight support member is configured to move the optical sighting device between two positions located over the mounting interface and on substantially the same vertical plane.