проріз прицілу
battle sight with notch
rear sight
rear sight aperture
rear sight elevation knob
peep rear sight
rear-sight elevating knob
rear-sight elevating pinion
rear-sight elevating screw knob
adjustable rear sight
height of the rear sight
folding screw adjustment rear sight
micrometer rear sight
wind-gauge rear sight
rear-sight bearing screw
rear-sight guard
rear-sight leaf
rear-sight leaf spring
rear-sight mortise
rear-sight mounting long screw
rear-sight slide cap
rear-sight thumb nut
rear-sight windage scale
rear-sight windage screw knob
peep rear sight with locking device
receiver rear sight
sear notch
backsight notch
dismounting notch
engage the sear notch
half cock notch
notch filter
D Term Notch Filter