кривошип клина
crank-sliding block
breech block pivoted below the level of the chamber
blow-back breech block
breech block
breech-block carrier
breech-block detent
wedge-type breech-block
vertical sliding breech-block system
face of breech block
cylinder block (engine block)
feed block slide (feed-block-actuating slide)
traversing hand crank
hand crank
bell-crank arm
brake crank
crank cheek
crank handle (of a machine gun)
crank pit
crank starting handle
crank web
crank-actuating shaft
web of a crank
divided crank case
feed crank
hand-operating crank
crank arm
crankshaft crank
crankshaft crank cheek
crank
breech
breech face
breech mechanism