стопорний штифт шептала
sear notch
sear pin
sear spring
drop-in auto sear
engage the sear notch
safety sear
sear
buffer plunger
detent plunger
automatic cocking lever plunger spring screw
barrel plunger spring
barrel-latch plunger
contact plunger
control plunger (of recoil system)
control plunger
valve plunger guide
vertical plunger priming fuel lift pump
eccentric shaft plunger
plunger pump
recoil system control plunger
plunger