головка ударника
firing pin retaining pin
firing point / firing pin
arming pin; safety pin
track pin retaining pin
belt-feed pawl pin / belt feed pawl pin
firing pin
impression of firing pin
inertia firing pin
firing pin piece of a rifle
firing pin safety
firing pin spring
firing-lever axis pin
firing-pin guide
firing-pin impression
firing-pin rear
firing-pin stop
fixed firing pin
lug of firing pin
firing-pin lock
firing-pin mechanism
control knob
locking knob
range setting knob
rear sight elevation knob
tuning control knob
focus knob
elevating screw knob
rear-sight elevating knob
rear-sight elevating screw knob
sight elevating knob
azimuth adjusting knob
azimuth adjusting worm knob