гніздо (паз) для мушки
front sight (fore / muzzle sight)
front sight post
upper edge of front sight
flat-top post of front sight
front sight (of firearm)
front sight mark of a submachine gun
front-sight body
front-sight bracket body
front-sight clamping screw
front-sight cover
front-sight guard
front-sight guards
front-sight locking screw
front-sight screw
blade front sight
front sight blade
thin blade front sight
front-sight blade screw
flat-top blade front sight
sight, to take a (careful) sight
day-sight (day sight)
modular integrated display and sight helmet (Modular Integrated Display-And-Sight Helmet)
create an opening
high altitude-high opening (HAHO)
high altitude-low opening (HALO)
high-altitude low-opening parachute technique (HALO)
firing signals (opening, shifting, ceasing fire)
air intake opening
air inlet opening
belt opening
breech-opening mechanism
breech-opening motor