паз (для п'яти) зупинки затвора
breechblock latch / breechblock operating latch
breechblock stop lever
slot-type groove
spiral parallel groove
barrel groove
cam groove
circular groove (of ammunition)
crimping groove
dismounting groove
vertical oil groove
extraction groove
extractor groove
finger groove
four-groove barrel
groove for coupling
groove
breechblock
breechblock buffer
screw breechblock
wedge breechblock
breechblock release
breechblock carrier
breechblock head
breechblock wedge
wedge-type breechblock
eccentric screw breechblock
eccentric-screw breechblock
hinged breechblock mechanism
horizontal sliding wedge breechblock
antiflapping stop
feed-pawl stop
elevating stop