#gunsight  a sight used for aiming a gun
  supertype:  sight.optical_instrument  a optical instrument for aiding the eye in aiming, as on a firearm or surveying instrument
  subtype:  battlesight  open_sight  panoramic_sight  peep_sight  telescopic_sight
  part:  view_finder
  part of:  gun  a weapon that discharges a missile at high velocity (especially from a metal tube or barrel)

No statement uses or specializes gunsight; click here to add one.