Also located on the left side of the night sight is the field-of-view
(FOV) selector. The FOV selector allows you to select a wide or narrow
FOV, depending on the target range.
Additionally, the four-position
actuator switch allows you to control the operation of the cooling
function of the night sight by controlling the coolant cartridge.
of the night sight and the LD/R. You perform optical alignment:
(1) When installing a night sight.
(2) After rough handling.
(3) When replacing the LD/R.