aiming mark (on a sight graticule)
прицільна мірка
aiming dot; aiming mark; crosshair; crosswires; pointing mark; telescope laying mark
declination aiming circle (declinated aiming circle)
front sight mark of a submachine gun
front sight (fore / muzzle sight)
sight, to take a (careful) sight
modular integrated display and sight helmet (Modular Integrated Display-And-Sight Helmet)