Similar to the system used in the boresight Model WK-29-8050A, however, this Boresight Telescope is used to align the 7.62 machine gun as part of the calibration of the commander systems only. The boresight bracket replaces the machine gun for calibration of the system using the same mounting studs as the machine gun to obtain proper alignment. Magnification is 36x. Field of View is 10′ – 1°10′. Minimum Focus is 5½’. Objective Diameter is 1.92″.