M101 / M102 M14E1 Aiming Post LightThe M14E1 Aiming Post Light is a battery-powered LED-illuminated device which aids in identifying the location of the near/far aiming post during night and low light operations.M21A1 Telescope MountThe M21A1 Telescope Mount is used to hold and support the M12A7 Panoramic Telescope. The M21A1 consists of a socket which supports the panoramic telescope, a longitudinal leveling mechanism, and a cross leveling mechanism.M23 Telescope MountThe M23 Telescope Mount is used to hold and support the M16A1D Elbow Telescope in elevation and deflection for direct fire. The M23 is used with and attached to the M4A1 Range Fire Control Quadrant.M134 Telescope MountThe M134 Telescope Mount provides an adjustable base for leveling the M113 Panoramic Telescope. M116 Series Elbow TelescopeThe M116 Series Elbow Telescopes are simple, fixed-focus, 3-power instruments. They are used in direct firing of the weapon.M12A7 Series Panoramic TelescopeThe M12A7 Series Panoramic Telescopes are typically used for laying the weapon in azimuth for indirect fire. However, should an emergency arise, the panoramic telescope can be put into service for direct fire operation.