вільний затвор
unlocked breech
breech mechanism
lever breech mechanism (LBM)
breech mechanism lever
breech mechanism lever retaining catch
breech-mechanism lever
breech-opening mechanism
wedge-type breech mechanism
vertical wedge-type breech mechanism
vertically-operated wedge-type breech mechanism
handle of breech mechanism lever
breech
breech face
breech ring (of firearm)
breech screw
breech-loading gun
breech loaded
breech piece socket
breech boresight
breech block pivoted below the level of the chamber
closed-breech scavenger system
blow-back breech block
breech and barrel assy
breech assembly
breech blast
breech block
breech carrier plate
breech casing
breech casing (of quick-firing ordnance)
breech chamber
breech cleaning brush
breech detail