вільний затвор
unlocked breech mechanism
breech
breech face
breech mechanism
breech ring (of firearm)
breech screw
breech-loading gun
lever breech mechanism (LBM)
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
breech end
breech end of barrel
breech end of bore
breech loader
breech loading (of ordnance)
breech lock
breech mechanism lever
breech mechanism lever retaining catch