Optics assembly with a base with a platform and removable and interchangeable modules

An assembly for a firearm, said assembly comprising:

• an assembly longitudinal axis;
• a base connected to the firearm replacing a rear sight tower of a Kalashnikov style firearm having:
• a platform;
• at least one slot generally parallel to said assembly longitudinal axis;
• a barrel ring connecting said base to the firearm;
• a module that is removably connected to said base, said module being slidably connected to said platform within said at least one slot;
• wherein said base has a head upstanding from said platform;
• wherein said head has a first head hole and a second head hole there through that are aligned to receive a pin;
• and
• wherein said module comprises a first ear with a first ear hole and a second ear with a second ear hole, said first ear hole and said second ear hole being alignable with said first head hole and said second head hole.

A method of attaching a module to a base connected to a firearm, said method comprising the steps:

• providing a firearm with a barrel;
• providing a base connected to the firearm replacing a rear sight tower of a Kalashnikov style firearm having:
• a first base slot and a second base slot;
• a barrel ring;
• and
• a platform;
• connecting the base to the firearm via the barrel ring;
• providing a module with a first module rib and a second module rib;
• attaching the module to the base by engaging the first module rib within the first base slot and engaging the second module rib within the second base slot wherein the module is slidably connected to the platform;
• and
• providing said base with a head upstanding from said platform;
• providing said head with a first head hole and a second head hole there through that are aligned to receive a pin;
• and
• providing said module with a first ear with a first ear hole and a second ear with a second ear hole, said first ear hole and said second ear hole being alignable with said first head hole and said second head hole.